diff --git a/components/cascader/__tests__/index.test.js b/components/cascader/__tests__/index.test.js
index 86cf209410..8e4aab695e 100644
--- a/components/cascader/__tests__/index.test.js
+++ b/components/cascader/__tests__/index.test.js
@@ -503,6 +503,7 @@ describe('Cascader', () => {
     });
     expect(wrapper.find('input').prop('placeholder')).toBe(customPlaceholder);
   });
+
   it('popup correctly with defaultValue RTL', () => {
     const wrapper = mount(
       <ConfigProvider direction="rtl">
@@ -523,6 +524,7 @@ describe('Cascader', () => {
       ),
     ).toMatchSnapshot();
   });
+
   it('can be selected in RTL direction', () => {
     const options2 = [
       {
diff --git a/components/cascader/index.tsx b/components/cascader/index.tsx
index c2180aee25..8fe32ef987 100644
--- a/components/cascader/index.tsx
+++ b/components/cascader/index.tsx
@@ -522,10 +522,8 @@ class Cascader extends React.Component<CascaderProps, CascaderState> {
         const names: FilledFieldNamesType = getFilledFieldNames(this.props);
         if (options && options.length > 0) {
           if (state.inputValue) {
-            options = this.generateFilteredOptions(prefixCls, renderEmpty);
-            if (isEqual(options, this.cachedOptions)) {
-              options = this.cachedOptions;
-            }
+             const filteredOptions = this.generateFilteredOptions(prefixCls, renderEmpty);
+             options = isEqual(filteredOptions, this.cachedOptions) ? this.cachedOptions : filteredOptions;
           }
         } else {
           options = [