diff --git a/components/json/include/cJSON.h b/components/json/include/cJSON.h
index 466d10dbd..92ed8c3b4 100644
--- a/components/json/include/cJSON.h
+++ b/components/json/include/cJSON.h
@@ -90,6 +90,7 @@ extern cJSON *cJSON_CreateTrue(void);
 extern cJSON *cJSON_CreateFalse(void);
 extern cJSON *cJSON_CreateBool(int b);
 extern cJSON *cJSON_CreateNumber(double num);
+extern cJSON *cJSON_CreateDouble(double num,int i_num);
 extern cJSON *cJSON_CreateString(const char *string);
 extern cJSON *cJSON_CreateArray(void);
 extern cJSON *cJSON_CreateObject(void);
diff --git a/components/json/library/cJSON.c b/components/json/library/cJSON.c
index ab3043711..2a5c39216 100644
--- a/components/json/library/cJSON.c
+++ b/components/json/library/cJSON.c
@@ -694,6 +694,7 @@ cJSON *cJSON_CreateTrue(void)					{cJSON *item=cJSON_New_Item();if(item)item->ty
 cJSON *cJSON_CreateFalse(void)					{cJSON *item=cJSON_New_Item();if(item)item->type=cJSON_False;return item;}
 cJSON *cJSON_CreateBool(int b)					{cJSON *item=cJSON_New_Item();if(item)item->type=b?cJSON_True:cJSON_False;return item;}
 cJSON *cJSON_CreateNumber(double num)			{cJSON *item=cJSON_New_Item();if(item){item->type=cJSON_Number;item->valuedouble=num;item->valueint=(int)num;}return item;}
+cJSON *cJSON_CreateDouble(double num,int i_num) {cJSON *item=cJSON_New_Item();if(item){item->type=cJSON_Number;item->valuedouble=num;item->valueint=i_num;}return item;}
 cJSON *cJSON_CreateString(const char *string)	{cJSON *item=cJSON_New_Item();if(item){item->type=cJSON_String;item->valuestring=cJSON_strdup(string);}return item;}
 cJSON *cJSON_CreateArray(void)					{cJSON *item=cJSON_New_Item();if(item)item->type=cJSON_Array;return item;}
 cJSON *cJSON_CreateObject(void)					{cJSON *item=cJSON_New_Item();if(item)item->type=cJSON_Object;return item;}