diff --git a/components/cascader/style/entry.less b/components/cascader/style/entry.less
index 03f5202ce9b..07ede2af3aa 100644
--- a/components/cascader/style/entry.less
+++ b/components/cascader/style/entry.less
@@ -1,4 +1,5 @@
 @import './index.less';
+@import './patch.less';
 // style dependencies
 @import '../../empty/style/index.less';
 @import '../../input/style/index.less';
diff --git a/components/cascader/style/patch.less b/components/cascader/style/patch.less
new file mode 100644
index 00000000000..65041f1f047
--- /dev/null
+++ b/components/cascader/style/patch.less
@@ -0,0 +1,3 @@
+.ant-cascader-menus {
+  position: relative;
+}
\ No newline at end of file
diff --git a/components/core/overlay/overlay-position.ts b/components/core/overlay/overlay-position.ts
index e537a25c7bc..9c00bf5fcb7 100644
--- a/components/core/overlay/overlay-position.ts
+++ b/components/core/overlay/overlay-position.ts
@@ -26,7 +26,8 @@ export const POSITION_MAP: { [key: string]: ConnectionPositionPair } = {
 };
 
 export const DEFAULT_TOOLTIP_POSITIONS = [POSITION_MAP.top, POSITION_MAP.right, POSITION_MAP.bottom, POSITION_MAP.left];
-export const DEFAULT_CASCADER_POSITIONS = [POSITION_MAP.bottomLeft, POSITION_MAP.topLeft];
+
+export const DEFAULT_CASCADER_POSITIONS = [POSITION_MAP.bottomLeft, POSITION_MAP.bottomRight, POSITION_MAP.topLeft, POSITION_MAP.topRight];
 
 export const DEFAULT_MENTION_TOP_POSITIONS = [
   new ConnectionPositionPair({ originX: 'start', originY: 'bottom' }, { overlayX: 'start', overlayY: 'bottom' }),