还是能缓存

scss/components/form/_form.scss

@@ -147,6 +147,7 @@
         flex-basis: 0;
         flex-grow: 1;
         max-width: 100%;
+        width: 0;
       }
 
       .#{$ns}Form-itemColumn--xs,

src/store/formItem.ts

@@ -85,9 +85,6 @@ export const FormItemStore = types
       return self.errorData.map(item => item.msg);
     }
 
-    let lastQueryValue: any;
-    let lastResult: any = [];
-
     return {
       get form(): any {
         return getForm();
@@ -117,13 +114,8 @@ export const FormItemStore = types
       },
 
       getSelectedOptions: (value: any = getValue()) => {
-        if (value === lastQueryValue) {
-          return lastResult;
-        }
-        lastQueryValue = value;
-
         if (typeof value === 'undefined') {
-          return (lastResult = []);
+          return [];
         }
 
         const selected = Array.isArray(value)
@@ -183,7 +175,7 @@ export const FormItemStore = types
           unMatched && selectedOptions.push(unMatched);
         });
 
-        return (lastResult = selectedOptions);
+        return selectedOptions;
       }
     };
   })