diff --git a/Algorithms/1004. Max Consecutive Ones III/1004. Max Consecutive Ones III.go b/Algorithms/1004. Max Consecutive Ones III/1004. Max Consecutive Ones III.go
new file mode 100644
index 00000000..fd48551b
--- /dev/null
+++ b/Algorithms/1004. Max Consecutive Ones III/1004. Max Consecutive Ones III.go	
@@ -0,0 +1,22 @@
+package leetcode
+
+func longestOnes(A []int, K int) int {
+	res, left, right := 0, 0, 0
+	for left < len(A) {
+		if right < len(A) && ((A[right] == 0 && K > 0) || A[right] == 1) {
+			if A[right] == 0 {
+				K--
+			}
+			right++
+		} else {
+			if K == 0 || (right == len(A) && K > 0) {
+				res = max(res, right-left)
+			}
+			if A[left] == 0 {
+				K++
+			}
+			left++
+		}
+	}
+	return res
+}
diff --git a/Algorithms/1004. Max Consecutive Ones III/1004. Max Consecutive Ones III_test.go b/Algorithms/1004. Max Consecutive Ones III/1004. Max Consecutive Ones III_test.go
new file mode 100644
index 00000000..01e28d13
--- /dev/null
+++ b/Algorithms/1004. Max Consecutive Ones III/1004. Max Consecutive Ones III_test.go	
@@ -0,0 +1,53 @@
+package leetcode
+
+import (
+	"fmt"
+	"testing"
+)
+
+type question1004 struct {
+	para1004
+	ans1004
+}
+
+// para 是参数
+// one 代表第一个参数
+type para1004 struct {
+	s []int
+	k int
+}
+
+// ans 是答案
+// one 代表第一个答案
+type ans1004 struct {
+	one int
+}
+
+func Test_Problem1004(t *testing.T) {
+
+	qs := []question1004{
+
+		question1004{
+			para1004{[]int{1, 1, 1, 0, 0, 0, 1, 1, 1, 1, 0}, 2},
+			ans1004{6},
+		},
+
+		question1004{
+			para1004{[]int{0, 0, 1, 1, 0, 0, 1, 1, 1, 0, 1, 1, 0, 0, 0, 1, 1, 1, 1}, 3},
+			ans1004{10},
+		},
+
+		question1004{
+			para1004{[]int{0, 0, 0, 1}, 4},
+			ans1004{4},
+		},
+	}
+
+	fmt.Printf("------------------------Leetcode Problem 1004------------------------\n")
+
+	for _, q := range qs {
+		_, p := q.ans1004, q.para1004
+		fmt.Printf("【input】:%v       【output】:%v\n", p, longestOnes(p.s, p.k))
+	}
+	fmt.Printf("\n\n\n")
+}
diff --git a/Algorithms/1004. Max Consecutive Ones III/README.md b/Algorithms/1004. Max Consecutive Ones III/README.md
new file mode 100644
index 00000000..97a2b845
--- /dev/null
+++ b/Algorithms/1004. Max Consecutive Ones III/README.md	
@@ -0,0 +1,44 @@
+# [1004. Max Consecutive Ones III](https://leetcode.com/problems/max-consecutive-ones-iii/)
+
+## 题目
+
+Given an array A of 0s and 1s, we may change up to K values from 0 to 1.
+
+Return the length of the longest (contiguous) subarray that contains only 1s. 
+
+
+Example 1:
+
+```c
+Input: A = [1,1,1,0,0,0,1,1,1,1,0], K = 2
+Output: 6
+Explanation: 
+[1,1,1,0,0,1,1,1,1,1,1]
+Bolded numbers were flipped from 0 to 1.  The longest subarray is underlined.
+```
+
+Example 2:
+
+```c
+Input: A = [0,0,1,1,0,0,1,1,1,0,1,1,0,0,0,1,1,1,1], K = 3
+Output: 10
+Explanation: 
+[0,0,1,1,1,1,1,1,1,1,1,1,0,0,0,1,1,1,1]
+Bolded numbers were flipped from 0 to 1.  The longest subarray is underlined.
+```
+
+
+Note:
+
+- 1 <= A.length <= 20000
+- 0 <= K <= A.length
+- A[i] is 0 or 1 
+
+
+## 题目大意
+
+这道题考察的是滑动窗口的问题。
+
+给出一个数组，数组中元素只包含 0 和 1 。再给一个 K，代表能将 0 变成 1 的次数。要求出经过变换以后，1 连续的最长长度。
+
+按照滑动窗口的思路处理即可，不断的更新和维护最大长度。