diff --git a/src/components/Tree.tsx b/src/components/Tree.tsx
index 4e538c3d..1c638f92 100644
--- a/src/components/Tree.tsx
+++ b/src/components/Tree.tsx
@@ -331,7 +331,6 @@ export class TreeSelector extends React.Component<TreeSelectorProps, TreeSelecto
 
             let nodeDisabled = !!uncheckable || !!disabled || selfDisabled;
 
-            // todo 加验证，提交前需要验证不能超出 maxLength 或者少于 minLength
             if (
                 !nodeDisabled
                 && (
diff --git a/src/renderers/Form/Options.tsx b/src/renderers/Form/Options.tsx
index 217dc127..ccbb9990 100644
--- a/src/renderers/Form/Options.tsx
+++ b/src/renderers/Form/Options.tsx
@@ -158,10 +158,6 @@ export function registerOptionsControl(config: OptionsConfig) {
             return false;
         }
 
-        validate() {
-            return Control.prototype.validate && Control.prototype.validate.call(this);
-        }
-
         componentWillReceiveProps(nextProps:OptionsControlProps) {
             const props = this.props;
             const formItem = nextProps.formItem as IFormItemStore;
@@ -230,6 +226,10 @@ export function registerOptionsControl(config: OptionsConfig) {
             }
         }
 
+        getWrappedInstance() {
+            return this.input;
+        }
+
         inputRef(ref:any) {
             this.input = ref;
         }
diff --git a/src/renderers/Form/index.tsx b/src/renderers/Form/index.tsx
index 9a7a195a..227904e4 100644
--- a/src/renderers/Form/index.tsx
+++ b/src/renderers/Form/index.tsx
@@ -89,6 +89,7 @@ export interface FormProps extends RendererProps, FormSchema {
     canAccessSuperData: boolean;
     persistData: boolean;   // 开启本地缓存
     clearPersistDataAfterSubmit: boolean; // 提交成功后清空本地缓存
+    trimValues?: boolean;
     onInit?: (values:object) => any;
     onReset?: (values:object) => void;
     onSubmit?: (values:object, action:any) => any;
@@ -487,10 +488,10 @@ export default class Form extends React.Component<FormProps, object> {
             env,
             onChange,
             clearPersistDataAfterSubmit,
-            trim
+            trimValues
         } = this.props;
 
-        if (trim) {
+        if (trimValues) {
             store.trimValues();
         }
 
diff --git a/src/store/formItem.ts b/src/store/formItem.ts
index fa94e869..c23945f6 100644
--- a/src/store/formItem.ts
+++ b/src/store/formItem.ts
@@ -493,7 +493,7 @@ export const FormItemStore = types
         }
 
         function trimValue() {
-            let value = iterateChildren(self.value, (item:any) => typeof item === 'string' && item.trim());
+            let value = iterateChildren(self.value, (item:any) => typeof item === 'string' ? item.trim() : item);
             value && changeValue(value, false);
         }
 
diff --git a/src/utils/helper.ts b/src/utils/helper.ts
index 9223777a..4506082d 100644
--- a/src/utils/helper.ts
+++ b/src/utils/helper.ts
@@ -731,7 +731,7 @@ export function iterateChildren(value: any, fn: Function): any {
         return value.map(item => iterateChildren(item, fn));
     }
     if (isObject(value)) {
-        let tmpValue = Object.assign({}, value);
+        let tmpValue = {...value};
         Object.keys(tmpValue).forEach(key => {
             (tmpValue as PlainObject)[key] = iterateChildren((tmpValue as PlainObject)[key], fn);
         });