diff --git a/packages/datetime-picker/README.md b/packages/datetime-picker/README.md
index 0e0001c1..a6be06b9 100644
--- a/packages/datetime-picker/README.md
+++ b/packages/datetime-picker/README.md
@@ -70,7 +70,8 @@ Page({
     formatter(type, value) {
       if (type === 'year') {
         return `${value}年`;
-      } else if (type === 'month') {
+      } 
+      if (type === 'month') {
         return `${value}月`;
       }
       return value;