diff --git a/weixin-java-cp/src/main/java/me/chanjar/weixin/cp/api/WxCpOaScheduleService.java b/weixin-java-cp/src/main/java/me/chanjar/weixin/cp/api/WxCpOaScheduleService.java
new file mode 100644
index 000000000..c5b75bce1
--- /dev/null
+++ b/weixin-java-cp/src/main/java/me/chanjar/weixin/cp/api/WxCpOaScheduleService.java
@@ -0,0 +1,88 @@
+package me.chanjar.weixin.cp.api;
+
+import me.chanjar.weixin.common.error.WxErrorException;
+import me.chanjar.weixin.cp.bean.oa.WxCpOaSchedule;
+
+import java.util.List;
+
+/**
+ * 企业微信日程接口.
+ * 官方文档：https://work.weixin.qq.com/api/doc/90000/90135/93648
+ *
+ * @author <a href="https://github.com/binarywang">Binary Wang</a>
+ * @date 2020 -12-25
+ */
+public interface WxCpOaScheduleService {
+  /**
+   * 创建日程
+   * <p>
+   * 该接口用于在日历中创建一个日程。
+   * <p>
+   * 请求方式： POST（HTTPS）
+   * 请求地址： https://qyapi.weixin.qq.com/cgi-bin/oa/schedule/add?access_token=ACCESS_TOKEN
+   *
+   * @param schedule the schedule
+   * @param agentId  授权方安装的应用agentid。仅旧的第三方多应用套件需要填此参数
+   * @return 日程ID string
+   * @throws WxErrorException the wx error exception
+   */
+  String add(WxCpOaSchedule schedule, Integer agentId) throws WxErrorException;
+
+  /**
+   * 更新日程
+   * <p>
+   * 该接口用于在日历中更新指定的日程。
+   * <p>
+   * 注意，更新操作是覆盖式，而不是增量式
+   * 不可更新组织者和日程所属日历ID
+   * <p>
+   * 请求方式： POST（HTTPS）
+   * 请求地址： https://qyapi.weixin.qq.com/cgi-bin/oa/schedule/update?access_token=ACCESS_TOKEN
+   *
+   * @param schedule the schedule
+   * @throws WxErrorException the wx error exception
+   */
+  void update(WxCpOaSchedule schedule) throws WxErrorException;
+
+  /**
+   * 获取日程详情
+   * <p>
+   * 该接口用于获取指定的日程详情。
+   * <p>
+   * 请求方式： POST（HTTPS）
+   * 请求地址： https://qyapi.weixin.qq.com/cgi-bin/oa/schedule/get?access_token=ACCESS_TOKEN
+   *
+   * @param scheduleIds the schedule ids
+   * @return the details
+   * @throws WxErrorException the wx error exception
+   */
+  List<WxCpOaSchedule> getDetails(List<String> scheduleIds) throws WxErrorException;
+
+  /**
+   * 取消日程
+   * 该接口用于取消指定的日程。
+   * <p>
+   * 请求方式： POST（HTTPS）
+   * 请求地址： https://qyapi.weixin.qq.com/cgi-bin/oa/schedule/del?access_token=ACCESS_TOKEN
+   *
+   * @param scheduleId 日程id
+   * @throws WxErrorException the wx error exception
+   */
+  void delete(String scheduleId) throws WxErrorException;
+
+  /**
+   * 获取日历下的日程列表
+   * 该接口用于获取指定的日历下的日程列表。
+   * 仅可获取应用自己创建的日历下的日程。
+   * <p>
+   * 请求方式： POST（HTTPS）
+   * 请求地址： https://qyapi.weixin.qq.com/cgi-bin/oa/schedule/get_by_calendar?access_token=ACCESS_TOKEN
+   *
+   * @param calId  日历ID
+   * @param offset 分页，偏移量, 默认为0
+   * @param limit  分页，预期请求的数据量，默认为500，取值范围 1 ~ 1000
+   * @return the string
+   * @throws WxErrorException the wx error exception
+   */
+  List<WxCpOaSchedule> listByCalendar(String calId, Integer offset, Integer limit) throws WxErrorException;
+}
diff --git a/weixin-java-cp/src/main/java/me/chanjar/weixin/cp/api/WxCpService.java b/weixin-java-cp/src/main/java/me/chanjar/weixin/cp/api/WxCpService.java
index 1933c1469..be681de41 100644
--- a/weixin-java-cp/src/main/java/me/chanjar/weixin/cp/api/WxCpService.java
+++ b/weixin-java-cp/src/main/java/me/chanjar/weixin/cp/api/WxCpService.java
@@ -1,7 +1,5 @@
 package me.chanjar.weixin.cp.api;
 
-import com.google.gson.JsonObject;
-import me.chanjar.weixin.common.bean.ToJson;
 import me.chanjar.weixin.common.bean.WxJsapiSignature;
 import me.chanjar.weixin.common.error.WxErrorException;
 import me.chanjar.weixin.common.service.WxService;
@@ -39,7 +37,7 @@ public interface WxCpService extends WxService {
    *
    * @return the access token
    * @throws WxErrorException the wx error exception
-   * @see #getAccessToken(boolean) #getAccessToken(boolean)
+   * @see #getAccessToken(boolean) #getAccessToken(boolean)#getAccessToken(boolean)
    */
   String getAccessToken() throws WxErrorException;
 
@@ -63,7 +61,7 @@ public interface WxCpService extends WxService {
    *
    * @return the jsapi ticket
    * @throws WxErrorException the wx error exception
-   * @see #getJsapiTicket(boolean) #getJsapiTicket(boolean)
+   * @see #getJsapiTicket(boolean) #getJsapiTicket(boolean)#getJsapiTicket(boolean)
    */
   String getJsapiTicket() throws WxErrorException;
 
@@ -90,7 +88,7 @@ public interface WxCpService extends WxService {
    *
    * @return the agent jsapi ticket
    * @throws WxErrorException the wx error exception
-   * @see #getJsapiTicket(boolean) #getJsapiTicket(boolean)
+   * @see #getJsapiTicket(boolean) #getJsapiTicket(boolean)#getJsapiTicket(boolean)
    */
   String getAgentJsapiTicket() throws WxErrorException;
 
@@ -376,10 +374,17 @@ public interface WxCpService extends WxService {
   /**
    * 获取日历相关接口的服务类对象
    *
-   * @return the menu service
+   * @return the oa calendar service
    */
   WxCpOaCalendarService getOaCalendarService();
 
+  /**
+   * 获取日程相关接口的服务类对象
+   *
+   * @return the oa schedule service
+   */
+  WxCpOaScheduleService getOaScheduleService();
+
   /**
    * 获取群机器人消息推送服务
    *
@@ -387,11 +392,11 @@ public interface WxCpService extends WxService {
    */
   WxCpGroupRobotService getGroupRobotService();
 
-  /*
+  /**
    * 获取工作台服务
    *
    * @return the workbench service
-   * */
+   */
   WxCpAgentWorkBenchService getWorkBenchService();
 
   /**
diff --git a/weixin-java-cp/src/main/java/me/chanjar/weixin/cp/api/impl/BaseWxCpServiceImpl.java b/weixin-java-cp/src/main/java/me/chanjar/weixin/cp/api/impl/BaseWxCpServiceImpl.java
index d356819e0..65ba5dce5 100644
--- a/weixin-java-cp/src/main/java/me/chanjar/weixin/cp/api/impl/BaseWxCpServiceImpl.java
+++ b/weixin-java-cp/src/main/java/me/chanjar/weixin/cp/api/impl/BaseWxCpServiceImpl.java
@@ -55,6 +55,7 @@ public abstract class BaseWxCpServiceImpl<H, P> implements WxCpService, RequestH
   private WxCpGroupRobotService groupRobotService = new WxCpGroupRobotServiceImpl(this);
   private WxCpMessageService messageService = new WxCpMessageServiceImpl(this);
   private WxCpOaCalendarService oaCalendarService = new WxCpOaCalendarServiceImpl(this);
+  private WxCpOaScheduleService oaScheduleService = new WxCpOaOaScheduleServiceImpl(this);
   private WxCpAgentWorkBenchService workBenchService = new WxCpAgentWorkBenchServiceImpl(this);
 
   /**
@@ -512,4 +513,9 @@ public abstract class BaseWxCpServiceImpl<H, P> implements WxCpService, RequestH
   public void setAgentService(WxCpAgentService agentService) {
     this.agentService = agentService;
   }
+
+  @Override
+  public WxCpOaScheduleService getOaScheduleService() {
+    return this.oaScheduleService;
+  }
 }
diff --git a/weixin-java-cp/src/main/java/me/chanjar/weixin/cp/api/impl/WxCpOaOaScheduleServiceImpl.java b/weixin-java-cp/src/main/java/me/chanjar/weixin/cp/api/impl/WxCpOaOaScheduleServiceImpl.java
new file mode 100644
index 000000000..ca33f7c66
--- /dev/null
+++ b/weixin-java-cp/src/main/java/me/chanjar/weixin/cp/api/impl/WxCpOaOaScheduleServiceImpl.java
@@ -0,0 +1,82 @@
+package me.chanjar.weixin.cp.api.impl;
+
+import com.google.common.collect.ImmutableMap;
+import com.google.gson.reflect.TypeToken;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import me.chanjar.weixin.common.error.WxErrorException;
+import me.chanjar.weixin.common.util.json.GsonParser;
+import me.chanjar.weixin.cp.api.WxCpOaScheduleService;
+import me.chanjar.weixin.cp.api.WxCpService;
+import me.chanjar.weixin.cp.bean.oa.WxCpOaSchedule;
+import me.chanjar.weixin.cp.util.json.WxCpGsonBuilder;
+
+import java.io.Serializable;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import static me.chanjar.weixin.cp.constant.WxCpApiPathConsts.Oa.*;
+
+/**
+ * 企业微信日程接口实现类.
+ *
+ * @author <a href="https://github.com/binarywang">Binary Wang</a>
+ * @date 2020-12-25
+ */
+@Slf4j
+@RequiredArgsConstructor
+public class WxCpOaOaScheduleServiceImpl implements WxCpOaScheduleService {
+  private final WxCpService cpService;
+
+  @Override
+  public String add(WxCpOaSchedule schedule, Integer agentId) throws WxErrorException {
+    Map<String, Serializable> param;
+    if (agentId == null) {
+      param = ImmutableMap.of("schedule", schedule);
+    } else {
+      param = ImmutableMap.of("schedule", schedule, "agentid", agentId);
+    }
+
+    return this.cpService.post(this.cpService.getWxCpConfigStorage().getApiUrl(SCHEDULE_ADD),
+      WxCpGsonBuilder.create().toJson(param));
+  }
+
+  @Override
+  public void update(WxCpOaSchedule schedule) throws WxErrorException {
+    this.cpService.post(this.cpService.getWxCpConfigStorage().getApiUrl(SCHEDULE_UPDATE),
+      WxCpGsonBuilder.create().toJson(ImmutableMap.of("schedule", schedule)));
+  }
+
+  @Override
+  public List<WxCpOaSchedule> getDetails(List<String> scheduleIds) throws WxErrorException {
+    final String response = this.cpService.post(this.cpService.getWxCpConfigStorage().getApiUrl(SCHEDULE_GET),
+      WxCpGsonBuilder.create().toJson(ImmutableMap.of("schedule_id_list", scheduleIds)));
+    return WxCpGsonBuilder.create().fromJson(GsonParser.parse(response).get("schedule_list"),
+      new TypeToken<List<WxCpOaSchedule>>() {
+      }.getType());
+  }
+
+  @Override
+  public void delete(String scheduleId) throws WxErrorException {
+    this.cpService.post(this.cpService.getWxCpConfigStorage().getApiUrl(SCHEDULE_DEL),
+      WxCpGsonBuilder.create().toJson(ImmutableMap.of("schedule_id", scheduleId)));
+  }
+
+  @Override
+  public List<WxCpOaSchedule> listByCalendar(String calId, Integer offset, Integer limit) throws WxErrorException {
+    final Map<String, Object> param = new HashMap<>(3);
+    param.put("cal_id", calId);
+    if (offset != null) {
+      param.put("offset", offset);
+    }
+    if (limit != null) {
+      param.put("limit", limit);
+    }
+    final String response = this.cpService.post(this.cpService.getWxCpConfigStorage().getApiUrl(SCHEDULE_LIST),
+      WxCpGsonBuilder.create().toJson(param));
+    return WxCpGsonBuilder.create().fromJson(GsonParser.parse(response).get("schedule_list"),
+      new TypeToken<List<WxCpOaSchedule>>() {
+      }.getType());
+  }
+}
diff --git a/weixin-java-cp/src/main/java/me/chanjar/weixin/cp/bean/message/WxCpMessage.java b/weixin-java-cp/src/main/java/me/chanjar/weixin/cp/bean/message/WxCpMessage.java
index 7fa1212c7..6a02ef1fd 100644
--- a/weixin-java-cp/src/main/java/me/chanjar/weixin/cp/bean/message/WxCpMessage.java
+++ b/weixin-java-cp/src/main/java/me/chanjar/weixin/cp/bean/message/WxCpMessage.java
@@ -199,7 +199,7 @@ public class WxCpMessage implements Serializable {
     if (this.getDuplicateCheckInterval() != null) {
       messageJson.addProperty("duplicate_check_interval", this.getDuplicateCheckInterval());
     }
-    
+
     this.handleMsgType(messageJson);
 
     if (StringUtils.isNotBlank(this.getSafe())) {
diff --git a/weixin-java-cp/src/main/java/me/chanjar/weixin/cp/bean/oa/WxCpOaSchedule.java b/weixin-java-cp/src/main/java/me/chanjar/weixin/cp/bean/oa/WxCpOaSchedule.java
new file mode 100644
index 000000000..2e8315dbd
--- /dev/null
+++ b/weixin-java-cp/src/main/java/me/chanjar/weixin/cp/bean/oa/WxCpOaSchedule.java
@@ -0,0 +1,194 @@
+package me.chanjar.weixin.cp.bean.oa;
+
+import com.google.gson.annotations.SerializedName;
+import lombok.Data;
+import lombok.experimental.Accessors;
+import me.chanjar.weixin.common.bean.ToJson;
+import me.chanjar.weixin.cp.util.json.WxCpGsonBuilder;
+
+import java.io.Serializable;
+import java.util.List;
+
+/**
+ * 日程信息bean.
+ *
+ * @author <a href="https://github.com/binarywang">Binary Wang</a>
+ * @date 2020-12-25
+ */
+@Data
+@Accessors(chain = true)
+public class WxCpOaSchedule implements Serializable, ToJson {
+  private static final long serialVersionUID = -6821274247372646346L;
+  /**
+   * 日程id
+   */
+  @SerializedName("schedule_id")
+  private String scheduleId;
+  /**
+   * 日程编号，是一个自增数字
+   */
+  @SerializedName("sequence")
+  private Integer sequence;
+  /**
+   * 组织者。不多于64字节
+   */
+  @SerializedName("organizer")
+  private String organizer;
+  /**
+   * 日程参与者列表。最多支持2000人
+   */
+  @SerializedName("attendees")
+  private List<Attendee> attendees;
+  /**
+   * 日程标题。0 ~ 128 字符。不填会默认显示为“新建事件”
+   */
+  @SerializedName("summary")
+  private String summary;
+  /**
+   * 日程描述。不多于512个字符
+   */
+  @SerializedName("description")
+  private String description;
+  /**
+   * 提醒相关信息
+   */
+  @SerializedName("reminders")
+  private Reminder reminders;
+  /**
+   * 日程地址。
+   * 不多于128个字符
+   */
+  @SerializedName("location")
+  private String location;
+  /**
+   * 日程开始时间，Unix时间戳
+   */
+  @SerializedName("start_time")
+  private Long startTime;
+  /**
+   * 日程结束时间，Unix时间戳
+   */
+  @SerializedName("end_time")
+  private Long endTime;
+  /**
+   *
+   */
+  @SerializedName("status")
+  private Integer status;
+  /**
+   * 日程所属日历ID。该日历必须是access_token所对应应用所创建的日历。
+   * 注意，这个日历必须是属于组织者(organizer)的日历；
+   * 如果不填，那么插入到组织者的默认日历上。
+   * 第三方应用必须指定cal_id
+   * 不多于64字节
+   */
+  @SerializedName("cal_id")
+  private String calId;
+
+  @Override
+  public String toJson() {
+    return WxCpGsonBuilder.create().toJson(this);
+  }
+
+  @Data
+  @Accessors(chain = true)
+  public static class Attendee implements Serializable {
+    private static final long serialVersionUID = 5419000348428480645L;
+    /**
+     * 日程参与者ID，
+     * 不多于64字节
+     */
+    @SerializedName("userid")
+    private String userid;
+    /**
+     * 日程参与者的接受状态。
+     * 0 - 未处理
+     * 1 - 待定
+     * 2 - 全部接受
+     * 3 - 仅接受一次
+     * 4 - 拒绝
+     */
+    @SerializedName("response_status")
+    private Integer responseStatus;
+  }
+
+  @Data
+  @Accessors(chain = true)
+  public static class Reminder implements Serializable {
+    private static final long serialVersionUID = 5030527150838243356L;
+
+    /**
+     * 是否需要提醒。0-否；1-是
+     */
+    @SerializedName("is_remind")
+    private Integer isRemind;
+    /**
+     * 是否重复日程。0-否；1-是
+     */
+    @SerializedName("is_repeat")
+    private Integer isRepeat;
+    /**
+     * 日程开始（start_time）前多少秒提醒，当is_remind为1时有效。
+     * 例如： 300表示日程开始前5分钟提醒。目前仅支持以下数值：
+     * 0 - 事件开始时
+     * 300 - 事件开始前5分钟
+     * 900 - 事件开始前15分钟
+     * 3600 - 事件开始前1小时
+     * 86400 - 事件开始前1天
+     */
+    @SerializedName("remind_before_event_secs")
+    private Integer remindBeforeEventSecs;
+    /**
+     * 重复类型，当is_repeat为1时有效。目前支持如下类型：
+     * 0 - 每日
+     * 1 - 每周
+     * 2 - 每月
+     * 5 - 每年
+     * 7 - 工作日
+     */
+    @SerializedName("repeat_type")
+    private Integer repeatType;
+    /**
+     * 重复结束时刻，Unix时间戳。不填或填0表示一直重复
+     */
+    @SerializedName("repeat_until")
+    private Long repeatUntil;
+    /**
+     * 是否自定义重复。0-否；1-是
+     */
+    @SerializedName("is_custom_repeat")
+    private Integer isCustomRepeat;
+    /**
+     * 重复间隔
+     * 仅当指定为自定义重复时有效
+     * 该字段随repeat_type不同而含义不同
+     * 例如：
+     * repeat_interval指定为3，repeat_type指定为每周重复，那么每3周重复一次；
+     * repeat_interval指定为3，repeat_type指定为每月重复，那么每3个月重复一次
+     */
+    @SerializedName("repeat_interval")
+    private Integer repeatInterval;
+    /**
+     * 每周周几重复
+     * 仅当指定为自定义重复且重复类型为每周时有效
+     * 取值范围：1 ~ 7，分别表示周一至周日
+     */
+    @SerializedName("repeat_day_of_week")
+    private List<Integer> repeatDayOfWeek;
+    /**
+     * 每月哪几天重复
+     * 仅当指定为自定义重复且重复类型为每月时有效
+     * 取值范围：1 ~ 31，分别表示1~31号
+     */
+    @SerializedName("repeat_day_of_month")
+    private List<Integer> repeatDayOfMonth;
+    /**
+     * 时区。UTC偏移量表示(即偏离零时区的小时数)，东区为正数，西区为负数。
+     * 例如：+8 表示北京时间东八区
+     * 默认为北京时间东八区
+     * 取值范围：-12 ~ +12
+     */
+    @SerializedName("timezone")
+    private Integer timezone;
+  }
+}
diff --git a/weixin-java-cp/src/main/java/me/chanjar/weixin/cp/constant/WxCpApiPathConsts.java b/weixin-java-cp/src/main/java/me/chanjar/weixin/cp/constant/WxCpApiPathConsts.java
index bac4dd96e..304bbe5a6 100644
--- a/weixin-java-cp/src/main/java/me/chanjar/weixin/cp/constant/WxCpApiPathConsts.java
+++ b/weixin-java-cp/src/main/java/me/chanjar/weixin/cp/constant/WxCpApiPathConsts.java
@@ -113,6 +113,12 @@ public final class WxCpApiPathConsts {
     public static final String CALENDAR_UPDATE = "/cgi-bin/oa/calendar/update";
     public static final String CALENDAR_GET = "/cgi-bin/oa/calendar/get";
     public static final String CALENDAR_DEL = "/cgi-bin/oa/calendar/del";
+
+    public static final String SCHEDULE_ADD = "/cgi-bin/oa/schedule/add";
+    public static final String SCHEDULE_UPDATE = "/cgi-bin/oa/schedule/update";
+    public static final String SCHEDULE_GET = "/cgi-bin/oa/schedule/get";
+    public static final String SCHEDULE_DEL = "/cgi-bin/oa/schedule/del";
+    public static final String SCHEDULE_LIST = "/cgi-bin/oa/schedule/get_by_calendar";
   }
 
   @UtilityClass
diff --git a/weixin-java-cp/src/test/java/me/chanjar/weixin/cp/api/impl/WxCpOaScheduleServiceImplTest.java b/weixin-java-cp/src/test/java/me/chanjar/weixin/cp/api/impl/WxCpOaScheduleServiceImplTest.java
new file mode 100644
index 000000000..09cbf874d
--- /dev/null
+++ b/weixin-java-cp/src/test/java/me/chanjar/weixin/cp/api/impl/WxCpOaScheduleServiceImplTest.java
@@ -0,0 +1,54 @@
+package me.chanjar.weixin.cp.api.impl;
+
+import com.google.inject.Inject;
+import me.chanjar.weixin.common.error.WxErrorException;
+import me.chanjar.weixin.cp.api.ApiTestModule;
+import me.chanjar.weixin.cp.api.WxCpService;
+import me.chanjar.weixin.cp.bean.oa.WxCpOaSchedule;
+import org.testng.annotations.Guice;
+import org.testng.annotations.Test;
+
+import java.util.Arrays;
+
+
+/**
+ * 单元测试类.
+ *
+ * @author <a href="https://github.com/binarywang">Binary Wang</a>
+ * @date 2020-12-25
+ */
+@Test
+@Guice(modules = ApiTestModule.class)
+public class WxCpOaScheduleServiceImplTest {
+  @Inject
+  protected WxCpService wxService;
+
+  @Test
+  public void testAdd() throws WxErrorException {
+    this.wxService.getOaScheduleService().add(new WxCpOaSchedule().setOrganizer("userid1")
+      .setDescription("description").setStartTime(111111111111L).setEndTime(222222222222L)
+      .setSummary("summary"), null);
+  }
+
+  @Test
+  public void testUpdate() throws WxErrorException {
+    this.wxService.getOaScheduleService().update(new WxCpOaSchedule().setScheduleId("2222").setOrganizer("userid1")
+      .setDescription("description").setStartTime(111111111111L).setEndTime(222222222222L)
+      .setSummary("summary"));
+  }
+
+  @Test
+  public void testGetDetails() throws WxErrorException {
+    this.wxService.getOaScheduleService().getDetails(Arrays.asList("11111"));
+  }
+
+  @Test
+  public void testDelete() throws WxErrorException {
+    this.wxService.getOaScheduleService().delete("111");
+  }
+
+  @Test
+  public void testListByCalendar() throws WxErrorException {
+    this.wxService.getOaScheduleService().listByCalendar("111", null, null);
+  }
+}
diff --git a/weixin-java-mp/src/main/java/me/chanjar/weixin/mp/api/WxMpMaterialService.java b/weixin-java-mp/src/main/java/me/chanjar/weixin/mp/api/WxMpMaterialService.java
index 998939ca8..afccd004e 100644
--- a/weixin-java-mp/src/main/java/me/chanjar/weixin/mp/api/WxMpMaterialService.java
+++ b/weixin-java-mp/src/main/java/me/chanjar/weixin/mp/api/WxMpMaterialService.java
@@ -50,8 +50,9 @@ public interface WxMpMaterialService {
    *
    * @param mediaType 媒体类型, 请看{@link me.chanjar.weixin.common.api.WxConsts}
    * @param file      文件对象
-   * @throws WxErrorException
-   * @see #mediaUpload(String, String, InputStream)
+   * @return the wx media upload result
+   * @throws WxErrorException the wx error exception
+   * @see #mediaUpload(String, String, InputStream) #mediaUpload(String, String, InputStream)
    */
   WxMediaUploadResult mediaUpload(String mediaType, File file) throws WxErrorException;
 
@@ -67,8 +68,9 @@ public interface WxMpMaterialService {
    * @param mediaType   媒体类型, 请看{@link me.chanjar.weixin.common.api.WxConsts}
    * @param fileType    文件类型，请看{@link me.chanjar.weixin.common.api.WxConsts}
    * @param inputStream 输入流
-   * @throws WxErrorException
-   * @see #mediaUpload(java.lang.String, java.io.File)
+   * @return the wx media upload result
+   * @throws WxErrorException the wx error exception
+   * @see #mediaUpload(java.lang.String, java.io.File) #mediaUpload(java.lang.String, java.io.File)
    */
   WxMediaUploadResult mediaUpload(String mediaType, String fileType, InputStream inputStream) throws WxErrorException;
 
@@ -83,8 +85,8 @@ public interface WxMpMaterialService {
    * </pre>
    *
    * @param mediaId 媒体文件Id
-   * @return 保存到本地的临时文件
-   * @throws WxErrorException
+   * @return 保存到本地的临时文件 file
+   * @throws WxErrorException the wx error exception
    */
   File mediaDownload(String mediaId) throws WxErrorException;
 
@@ -99,8 +101,8 @@ public interface WxMpMaterialService {
    * </pre>
    *
    * @param mediaId 媒体文件Id
-   * @return 保存到本地的临时文件
-   * @throws WxErrorException
+   * @return 保存到本地的临时文件 file
+   * @throws WxErrorException the wx error exception
    */
   File jssdkMediaDownload(String mediaId) throws WxErrorException;
 
@@ -114,7 +116,7 @@ public interface WxMpMaterialService {
    *
    * @param file 上传的文件对象
    * @return WxMediaImgUploadResult 返回图片url
-   * @throws WxErrorException
+   * @throws WxErrorException the wx error exception
    */
   WxMediaImgUploadResult mediaImgUpload(File file) throws WxErrorException;
 
@@ -139,6 +141,8 @@ public interface WxMpMaterialService {
    *
    * @param mediaType 媒体类型, 请看{@link me.chanjar.weixin.common.api.WxConsts}
    * @param material  上传的素材, 请看{@link WxMpMaterial}
+   * @return the wx mp material upload result
+   * @throws WxErrorException the wx error exception
    */
   WxMpMaterialUploadResult materialFileUpload(String mediaType, WxMpMaterial material) throws WxErrorException;
 
@@ -159,6 +163,8 @@ public interface WxMpMaterialService {
    * </pre>
    *
    * @param news 上传的图文消息, 请看{@link WxMpMaterialNews}
+   * @return the wx mp material upload result
+   * @throws WxErrorException the wx error exception
    */
   WxMpMaterialUploadResult materialNewsUpload(WxMpMaterialNews news) throws WxErrorException;
 
@@ -171,6 +177,8 @@ public interface WxMpMaterialService {
    * </pre>
    *
    * @param mediaId 永久素材的id
+   * @return the input stream
+   * @throws WxErrorException the wx error exception
    */
   InputStream materialImageOrVoiceDownload(String mediaId) throws WxErrorException;
 
@@ -183,6 +191,8 @@ public interface WxMpMaterialService {
    * </pre>
    *
    * @param mediaId 永久素材的id
+   * @return the wx mp material video info result
+   * @throws WxErrorException the wx error exception
    */
   WxMpMaterialVideoInfoResult materialVideoInfo(String mediaId) throws WxErrorException;
 
@@ -195,6 +205,8 @@ public interface WxMpMaterialService {
    * </pre>
    *
    * @param mediaId 永久素材的id
+   * @return the wx mp material news
+   * @throws WxErrorException the wx error exception
    */
   WxMpMaterialNews materialNewsInfo(String mediaId) throws WxErrorException;
 
@@ -207,6 +219,8 @@ public interface WxMpMaterialService {
    * </pre>
    *
    * @param wxMpMaterialArticleUpdate 用来更新图文素材的bean, 请看{@link WxMpMaterialArticleUpdate}
+   * @return the boolean
+   * @throws WxErrorException the wx error exception
    */
   boolean materialNewsUpdate(WxMpMaterialArticleUpdate wxMpMaterialArticleUpdate) throws WxErrorException;
 
@@ -223,6 +237,8 @@ public interface WxMpMaterialService {
    * </pre>
    *
    * @param mediaId 永久素材的id
+   * @return the boolean
+   * @throws WxErrorException the wx error exception
    */
   boolean materialDelete(String mediaId) throws WxErrorException;
 
@@ -238,6 +254,9 @@ public interface WxMpMaterialService {
    * 详情请见: <a href="http://mp.weixin.qq.com/wiki?t=resource/res_main&id=mp1444738733&token=&lang=zh_CN">获取素材总数</a>
    * 接口url格式：https://api.weixin.qq.com/cgi-bin/material/get_materialcount?access_token=ACCESS_TOKEN
    * </pre>
+   *
+   * @return the wx mp material count result
+   * @throws WxErrorException the wx error exception
    */
   WxMpMaterialCountResult materialCount() throws WxErrorException;
 
@@ -251,6 +270,8 @@ public interface WxMpMaterialService {
    *
    * @param offset 从全部素材的该偏移位置开始返回，0表示从第一个素材 返回
    * @param count  返回素材的数量，取值在1到20之间
+   * @return the wx mp material news batch get result
+   * @throws WxErrorException the wx error exception
    */
   WxMpMaterialNewsBatchGetResult materialNewsBatchGet(int offset, int count) throws WxErrorException;
 
@@ -265,6 +286,8 @@ public interface WxMpMaterialService {
    * @param type   媒体类型, 请看{@link me.chanjar.weixin.common.api.WxConsts}
    * @param offset 从全部素材的该偏移位置开始返回，0表示从第一个素材 返回
    * @param count  返回素材的数量，取值在1到20之间
+   * @return the wx mp material file batch get result
+   * @throws WxErrorException the wx error exception
    */
   WxMpMaterialFileBatchGetResult materialFileBatchGet(String type, int offset, int count) throws WxErrorException;
 
diff --git a/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/service/WxPayService.java b/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/service/WxPayService.java
index 87e4fcef5..4c95249b2 100644
--- a/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/service/WxPayService.java
+++ b/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/service/WxPayService.java
@@ -69,7 +69,7 @@ public interface WxPayService {
 
   /**
    * 发送post请求，得到响应字符串.
-   *
+   * <p>
    * 部分字段会包含敏感信息，所以在提交前需要在请求头中会包含"Wechatpay-Serial"信息
    *
    * @param url        请求地址
@@ -82,7 +82,7 @@ public interface WxPayService {
   /**
    * 发送post请求，得到响应字符串.
    *
-   * @param url        请求地址
+   * @param url      请求地址
    * @param httpPost 请求信息
    * @return 返回请求结果字符串 string
    * @throws WxPayException the wx pay exception
@@ -102,7 +102,7 @@ public interface WxPayService {
    * 发送下载 V3请求，得到响应流.
    *
    * @param url 请求地址
-   * @return 返回请求响应流
+   * @return 返回请求响应流 input stream
    * @throws WxPayException the wx pay exception
    */
   InputStream downloadV3(URI url) throws WxPayException;
@@ -117,7 +117,7 @@ public interface WxPayService {
   /**
    * 获取红包接口服务类.
    *
-   * @return .
+   * @return . redpack service
    */
   RedpackService getRedpackService();
 
@@ -138,13 +138,15 @@ public interface WxPayService {
 
   /**
    * 获取电商收付通服务类
-   * @return
+   *
+   * @return the ecommerce service
    */
   EcommerceService getEcommerceService();
 
   /**
-   * 微信支付通用媒体服务类
-   * @return
+   * 获取微信支付通用媒体服务类
+   *
+   * @return the merchant media service
    */
   MerchantMediaService getMerchantMediaService();
 
@@ -243,11 +245,12 @@ public interface WxPayService {
   /**
    * 调用统一下单接口，并组装生成支付所需参数对象.
    *
+   * @param <T>               the type parameter
    * @param specificTradeType 将使用的交易方式，不能为 null
    * @param request           统一下单请求参数，设定的 tradeType 及配置里的 tradeType 将被忽略，转而使用 specificTradeType
    * @return 返回 {@link WxPayConstants.TradeType.Specific} 指定的类
    * @throws WxPayException the wx pay exception
-   * @see WxPayService#createOrder(WxPayUnifiedOrderRequest)
+   * @see WxPayService#createOrder(WxPayUnifiedOrderRequest) WxPayService#createOrder(WxPayUnifiedOrderRequest)
    */
   <T> T createOrder(WxPayConstants.TradeType.Specific<T> specificTradeType, WxPayUnifiedOrderRequest request) throws WxPayException;
 
@@ -423,7 +426,7 @@ public interface WxPayService {
    * 解析扫码支付回调通知
    * 详见https://pay.weixin.qq.com/wiki/doc/api/native.php?chapter=6_4
    *
-   * @param xmlData the xml data
+   * @param xmlData  the xml data
    * @param signType 签名类型
    * @return the wx scan pay notify result
    * @throws WxPayException the wx pay exception
@@ -518,7 +521,7 @@ public interface WxPayService {
    * @param billType   账单类型 bill_type ALL，返回当日所有订单信息，默认值，SUCCESS，返回当日成功支付的订单，REFUND，返回当日退款订单
    * @param tarType    压缩账单 tar_type 非必传参数，固定值：GZIP，返回格式为.gzip的压缩包账单。不传则默认为数据流形式。
    * @param deviceInfo 设备号 device_info 非必传参数，终端设备号
-   * @return 对账内容原始字符串
+   * @return 对账内容原始字符串 string
    * @throws WxPayException the wx pay exception
    */
   String downloadRawBill(String billDate, String billType, String tarType, String deviceInfo) throws WxPayException;
@@ -537,7 +540,7 @@ public interface WxPayService {
    * </pre>
    *
    * @param request 下载对账单请求
-   * @return 对账内容原始字符串
+   * @return 对账内容原始字符串 string
    * @throws WxPayException the wx pay exception
    */
   String downloadRawBill(WxPayDownloadBillRequest request) throws WxPayException;
@@ -684,7 +687,7 @@ public interface WxPayService {
    * @param longUrl 需要被压缩的网址
    * @return the string
    * @throws WxPayException the wx pay exception
-   * @see WxPayService#shorturl(WxPayShorturlRequest) WxPayService#shorturl(WxPayShorturlRequest)
+   * @see WxPayService#shorturl(WxPayShorturlRequest) WxPayService#shorturl(WxPayShorturlRequest)WxPayService#shorturl(WxPayShorturlRequest)
    */
   String shorturl(String longUrl) throws WxPayException;
 
@@ -712,7 +715,7 @@ public interface WxPayService {
    * @param authCode 授权码
    * @return openid string
    * @throws WxPayException the wx pay exception
-   * @see WxPayService#authcode2Openid(WxPayAuthcode2OpenidRequest) WxPayService#authcode2Openid(WxPayAuthcode2OpenidRequest)
+   * @see WxPayService#authcode2Openid(WxPayAuthcode2OpenidRequest) WxPayService#authcode2Openid(WxPayAuthcode2OpenidRequest)WxPayService#authcode2Openid(WxPayAuthcode2OpenidRequest)
    */
   String authcode2Openid(String authCode) throws WxPayException;
 
@@ -860,7 +863,7 @@ public interface WxPayService {
    *
    * @param feeType 外币币种
    * @param date    日期，格式为yyyyMMdd，如2009年12月25日表示为20091225。时区为GMT+8 beijing
-   * @return .
+   * @return . wx pay query exchange rate result
    * @throws WxPayException .
    */
   WxPayQueryExchangeRateResult queryExchangeRate(String feeType, String date) throws WxPayException;
diff --git a/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/service/impl/BaseWxPayServiceImpl.java b/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/service/impl/BaseWxPayServiceImpl.java
index 476fd3b9e..4c14cda09 100644
--- a/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/service/impl/BaseWxPayServiceImpl.java
+++ b/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/service/impl/BaseWxPayServiceImpl.java
@@ -50,25 +50,18 @@ import static com.github.binarywang.wxpay.constant.WxPayConstants.TarType;
 public abstract class BaseWxPayServiceImpl implements WxPayService {
   private static final String TOTAL_FUND_COUNT = "资金流水总笔数";
 
-  /**
-   * The Log.
-   */
+
   final Logger log = LoggerFactory.getLogger(this.getClass());
-  /**
-   * The constant wxApiData.
-   */
+
   static ThreadLocal<WxPayApiData> wxApiData = new ThreadLocal<>();
 
   private EntPayService entPayService = new EntPayServiceImpl(this);
-  private ProfitSharingService profitSharingService = new ProfitSharingServiceImpl(this);
-  private RedpackService redpackService = new RedpackServiceImpl(this);
-  private PayScoreService payScoreService = new PayScoreServiceImpl(this);
-  private EcommerceService ecommerceService = new EcommerceServiceImpl(this);
-  private MerchantMediaService merchantMediaService =new MerchantMediaServiceImpl(this);
+  private final ProfitSharingService profitSharingService = new ProfitSharingServiceImpl(this);
+  private final RedpackService redpackService = new RedpackServiceImpl(this);
+  private final PayScoreService payScoreService = new PayScoreServiceImpl(this);
+  private final EcommerceService ecommerceService = new EcommerceServiceImpl(this);
+  private final MerchantMediaService merchantMediaService = new MerchantMediaServiceImpl(this);
 
-  /**
-   * The Config.
-   */
   protected WxPayConfig config;
 
   @Override
@@ -98,7 +91,7 @@ public abstract class BaseWxPayServiceImpl implements WxPayService {
 
   @Override
   public MerchantMediaService getMerchantMediaService() {
-    return merchantMediaService;
+    return this.merchantMediaService;
   }
 
   @Override
diff --git a/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/service/impl/MerchantMediaServiceImpl.java b/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/service/impl/MerchantMediaServiceImpl.java
index 811d61f6b..7952513f5 100644
--- a/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/service/impl/MerchantMediaServiceImpl.java
+++ b/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/service/impl/MerchantMediaServiceImpl.java
@@ -19,7 +19,6 @@ import java.net.URI;
 @Slf4j
 @RequiredArgsConstructor
 public class MerchantMediaServiceImpl implements MerchantMediaService {
-
   private final WxPayService payService;
 
   @Override