diff --git a/demo/pages/Form/index.axml b/demo/pages/Form/index.axml
index 0089d19ee..9ef57196c 100644
--- a/demo/pages/Form/index.axml
+++ b/demo/pages/Form/index.axml
@@ -43,8 +43,6 @@
       name="picker" 
       form="{{form}}">
       <picker 
-        cols="{{3}}" 
-        disabled="{{false}}" 
         pickerholder="请选择" 
         data="{{pickerList}}"
         mode="form"
diff --git a/src/Checkbox/props.js b/src/Checkbox/props.js
index 0a9b64834..04fb4d327 100644
--- a/src/Checkbox/props.js
+++ b/src/Checkbox/props.js
@@ -1,3 +1,4 @@
 export const CheckboxDefaultProps = {
   disabled: false,
+  checked: false
 };
diff --git a/src/CheckboxGroup/props.js b/src/CheckboxGroup/props.js
index 462239a2c..9b8e8cf75 100644
--- a/src/CheckboxGroup/props.js
+++ b/src/CheckboxGroup/props.js
@@ -3,4 +3,5 @@ export const CheckboxGroupDefaultProps = {
   radius: false,
   uid: 'CheckboxGroup',
   controlled: false,
+  value: []
 };
diff --git a/src/RadioGroup/props.js b/src/RadioGroup/props.js
index 25b6feaa6..378198705 100644
--- a/src/RadioGroup/props.js
+++ b/src/RadioGroup/props.js
@@ -3,4 +3,5 @@ export const RadioGroupDefaultProps = {
   radius: false,
   uid: 'RadioGroup',
   position: 'vertical',
+  value: ''
 };
diff --git a/src/Selector/props.js b/src/Selector/props.js
index 09df93938..34bb0e1a5 100644
--- a/src/Selector/props.js
+++ b/src/Selector/props.js
@@ -2,4 +2,5 @@ export const SelectorDefaultProps = {
   controlled: false,
   multiple: false,
   disabled: false,
+  value: ''
 };