diff --git a/src/react/ReactChildren.js b/src/react/ReactChildren.js
index bbc07d81edaad3705a3dca0942e1cbc01bff2624..39a2d8ce8213f3979ea4a037cff8506a0c4930eb 100644
--- a/src/react/ReactChildren.js
+++ b/src/react/ReactChildren.js
@@ -1,8 +1,45 @@
+
+let arr = [];
+let index = 0;
+let key = "";
 function mapChildren(children, func, context) {
     //TODO实现此mapChildren方法
-    return children;
+
+    if (children === null || children === undefined) {
+        return children;
+    }
+    function fn(children) {
+        if (Array.isArray(children)) {
+            for (let i = 0; i < children.length; i++) {
+                let child = children[i];
+                if (child.key == null) {
+                    key = `.${index}/$`
+                } else {
+                    key = `.$${child.key}/.$`;
+                }
+                if (Array.isArray(child)) {
+                    fn(child);
+                    return;
+                }
+                callback(child);
+                index++;
+            }
+        } else {
+            callback(children)
+        }
+    }
+    function callback(child) {
+        let ary = func(child, index);
+        for (let k = 0; k < ary.length; k++) {
+            ary[k].key = key + ary[k].key;
+            arr.push(ary[k])
+        }
+    }
+    fn(children);
+    return arr;
 }
 
 export {
     mapChildren as map,
-};
\ No newline at end of file
+};
+