diff --git a/src/react/ReactChildren.js b/src/react/ReactChildren.js
index bbc07d81edaad3705a3dca0942e1cbc01bff2624..f16862f38e8caeb1989a4f9e305d74e31c8c5f25 100644
--- a/src/react/ReactChildren.js
+++ b/src/react/ReactChildren.js
@@ -1,8 +1,29 @@
 function mapChildren(children, func, context) {
-    //TODO实现此mapChildren方法
-    return children;
+        //TODO实现此mapChildren方法
+  if (children == null) {
+    return children
+  }
+  let result = []
+  let bookCount = 0;
+  const mapToKey = (children) => {
+    children.map((item, index) => {
+      if(Array.isArray(item)) {
+        mapToKey(item)
+      }else {
+        let mappedChild = func.call(context, item, bookCount)
+        if (Array.isArray(mappedChild)) {
+          result = result.concat(mappedChild)
+        } else {
+          result.push(mappedChild)
+        }
+        bookCount++;
+      }
+    })
+  }
+  if (Array.isArray(children)) {
+    mapToKey(children)
+  }
+  return result
 }
 
-export {
-    mapChildren as map,
-};
\ No newline at end of file
+export { mapChildren as map }
\ No newline at end of file