diff --git a/components/freertos/port/esp8266/heap_5.c b/components/freertos/port/esp8266/heap_5.c
index 7f43e8d5..0e94d843 100644
--- a/components/freertos/port/esp8266/heap_5.c
+++ b/components/freertos/port/esp8266/heap_5.c
@@ -332,6 +332,17 @@ size_t xPortWantedSizeAlign(size_t xWantedSize)
 	return xWantedSize;
 }
 
+/*
+ * @brief add trace information to allocated memory
+ */
+void esp_mem_trace(const void *ptr, const char *trace, int no)
+{
+	BlockLink_t *pxLink = (BlockLink_t *)((uint8_t *)ptr - uxHeapStructSize);
+
+	pxLink->file = trace;
+	pxLink->line = (unsigned)no;
+}
+
 void *pvPortMalloc( size_t xWantedSize )
 #ifdef MEMLEAK_DEBUG
 {
diff --git a/components/freertos/port/esp8266/include/freertos/portmacro.h b/components/freertos/port/esp8266/include/freertos/portmacro.h
index 6e830a18..27ea1f7f 100644
--- a/components/freertos/port/esp8266/include/freertos/portmacro.h
+++ b/components/freertos/port/esp8266/include/freertos/portmacro.h
@@ -208,6 +208,22 @@ typedef struct _xt_isr_entry_ {
 
 void show_critical_info(void);
 
+/*
+ * @brief add trace information to allocated memory
+ * 
+ * @param ptr memory pointer allocated by "os_maloc", "malloc" and so on
+ * @param trace trace information, file name(__FILE__) or "__builtin_return_address(0)" is OK
+ * @param no number of trace information, file line(__LINE__) or -1(using "__builtin_return_address(0)")
+ */
+void esp_mem_trace(const void *ptr, const char *trace, int no);
+
+/*
+ * @brief add file trace information to allocated memory
+ * 
+ * @param ptr memory pointer allocated by "os_maloc", "malloc" and so on
+ */
+#define esp_mem_mark_file(ptr) esp_mem_trace((ptr), __FILE__, LINE__)
+
 #ifdef __cplusplus
 }
 #endif