diff --git a/src/react/ReactChildren.js b/src/react/ReactChildren.js
index bbc07d81edaad3705a3dca0942e1cbc01bff2624..96d024ca0a65a31786ca1cdbfbcf95b08f527d41 100644
--- a/src/react/ReactChildren.js
+++ b/src/react/ReactChildren.js
@@ -1,6 +1,30 @@
 function mapChildren(children, func, context) {
     //TODO实现此mapChildren方法
-    return children;
+    children = Array.isArray(children) ? children: [children]
+    let newArr = [];
+    let index = 0;
+    function flatMap(kids, key){
+        kids.forEach((kid, i) => {
+            if (Array.isArray(kid)) {
+                key += `${i}:`
+                flatMap(kid, key);
+            }else{
+                const domkey = kid.key ? `$${kid.key}`: `${i}`;
+                let res = func(kid, index);
+                res = Array.isArray(res)? res: [res];
+                res.forEach(child => {
+                    child.key = `${key}${domkey}/.$${child.key? child.key: i}`;
+                    newArr.push(child);
+                });
+                index++;
+            }
+        });
+    }
+    flatMap(children, '.');
+
+    // children = children.flat(Infinity).map(func).flat();
+
+    return newArr;
 }
 
 export {