From 6343928da05ac48b0fa53f46d6ffb1e4311667e8 Mon Sep 17 00:00:00 2001
From: chenjiahan <chenjiahan@youzan.com>
Date: Sat, 21 Mar 2020 06:43:25 +0800
Subject: [PATCH] docs(Picker): add cascade deepth tip (#5875)

---
 src/picker/README.zh-CN.md | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/picker/README.zh-CN.md b/src/picker/README.zh-CN.md
index 74640fa40..22151741a 100644
--- a/src/picker/README.zh-CN.md
+++ b/src/picker/README.zh-CN.md
@@ -147,6 +147,8 @@ export default {
 };
 ```
 
+> 级联选择的数据嵌套深度需要保持一致，如果部分选项没有子选项，可以使用空字符串进行占位
+
 ### 禁用选项
 
 选项可以为对象结构，通过设置 disabled 来禁用该选项