diff --git a/src/react/ReactChildren.js b/src/react/ReactChildren.js
index bbc07d81edaad3705a3dca0942e1cbc01bff2624..3db969a6ef728584d7b35d2097656fd3a564807a 100644
--- a/src/react/ReactChildren.js
+++ b/src/react/ReactChildren.js
@@ -1,7 +1,53 @@
-function mapChildren(children, func, context) {
-    //TODO实现此mapChildren方法
-    return children;
+function judgeKey(children,index,keyindex){
+    let key =keyindex
+    if(children.key){
+        key= key+`$${children.key}`
+    }else{
+        key=key+`${index}`
+    }
+    return key
 }
+function judgeSecond(key){
+    let reg = new RegExp('/.')
+   return reg.exec(key)
+}
+
+function mapChildren(children,func){
+    let res = []
+    let index=0
+    function mapAll(children,key){
+        for(let i  in  children){
+            if(children.hasOwnProperty(i)){
+                if(Array.isArray(children[i])){
+                    let newkey = key+i+`:`
+                    mapAll(children[i],newkey)
+                }else{
+                    let newkey = judgeKey(children[i],i,key)               
+                    if(judgeSecond(newkey)){//只可能不是array
+                        children[i].key =newkey
+                        res.push(children[i])  
+                    }else{
+                        let funcres = func(children[i],index)
+                        index++;
+                        if(Array.isArray(funcres)){
+                            let secKey= newkey+'/.'
+                            console.log(secKey)
+                            mapAll(funcres,secKey)
+                        }else{//不返回数组会进来
+                            let mapedkey = judgeKey(funcres,index,newkey+'/.')
+                            funcres.key =mapedkey
+                            res.push(funcres)
+                        }
+                    }
+                }
+            }
+          
+        }
+    }
+    mapAll(children,'.')
+    return res
+}
+
 
 export {
     mapChildren as map,