diff --git a/index.js b/index.js
index 59d6c84..afd2196 100644
--- a/index.js
+++ b/index.js
@@ -8,15 +8,14 @@ function myPromise(constructor) {
   self.reason = undefined;//定义状态为rejected的时候的状态
 
   function resolve(value) {
-
-    // TODO resolve如何改变状态及返回结果
+    self.status = 'resolve';
+    self.value = value;
 
   }
 
   function reject(reason) {
-
-    // TODO reject如何改变状态及返回结果
-
+    self.status = 'reject';
+    self.reason = reason;
   }
 
   //捕获构造异常
@@ -34,8 +33,11 @@ function myPromise(constructor) {
 }
 
 myPromise.prototype.then = function (onFullfilled, onRejected) {
-
-  //TODO then如何实现
+  if (this.status === 'resolve') {
+    onFullfilled(this.value);
+  } else if (this.status === 'reject') {
+    onRejected(this.reason);
+  }
 
 }
 module.exports = myPromise