diff --git a/components/cascader/Cascader.razor b/components/cascader/Cascader.razor
index 0f7192b8..19d5c6d9 100644
--- a/components/cascader/Cascader.razor
+++ b/components/cascader/Cascader.razor
@@ -7,6 +7,7 @@
                   OnMaskClick="CascaderOnBlur"
                   Trigger="new Trigger[] { }"
                   BoundaryAdjustMode="@BoundaryAdjustMode"
+                  Placement="@Placement"
                   PopupContainerSelector="@PopupContainerSelector"
                   OverlayEnterCls="ant-slide-up-enter ant-slide-up-enter-active ant-slide-up"
                   OverlayLeaveCls="ant-slide-up-leave ant-slide-up-leave-active ant-slide-up">
diff --git a/components/cascader/Cascader.razor.cs b/components/cascader/Cascader.razor.cs
index 1ceba522..4cbbca63 100644
--- a/components/cascader/Cascader.razor.cs
+++ b/components/cascader/Cascader.razor.cs
@@ -62,6 +62,9 @@ namespace AntDesign
             }
         }
 
+        [Parameter]
+        public Placement Placement { get; set; }
+
         private List<CascaderNode> _nodelist = new List<CascaderNode>();
         private List<CascaderNode> _selectedNodes = new List<CascaderNode>();
         private List<CascaderNode> _hoverSelectedNodes = new List<CascaderNode>();
diff --git a/site/AntDesign.Docs/Demos/Components/Cascader/doc/index.en-US.md b/site/AntDesign.Docs/Demos/Components/Cascader/doc/index.en-US.md
index bf90ef97..7a9e5aa4 100644
--- a/site/AntDesign.Docs/Demos/Components/Cascader/doc/index.en-US.md
+++ b/site/AntDesign.Docs/Demos/Components/Cascader/doc/index.en-US.md
@@ -21,13 +21,14 @@ Cascader
 | 参数                 |  说明	                                          |  类型               |  默认值  |  
 | -------------------- | ---------------------------------------------------- | --------------------- | --------- |  
 | AllowClear           |  whether allow clear                                      |  bool               |  true	      |
-| BoundaryAdjustMode | `Dropdown` adjustment strategy (when for example browser resize is happening)         | TriggerBoundaryAdjustMode    | TriggerBoundaryAdjustMode.InView         |
+| BoundaryAdjustMode   | `Dropdown` adjustment strategy (when for example browser resize is happening)         | TriggerBoundaryAdjustMode    | TriggerBoundaryAdjustMode.InView         |
 | ChangeOnSelect       |  change value on each selection if set to true, see above demo for details  |  bool               |  false	      |
 | Style                |  additional css class                                       |  string             |  -	          |
 | DefaultValue         |  initial selected value                                      |  string             |  -	          |
 | ExpandTrigger        |  expand current item when click or hover, one of 'click' 'hover'       |  string             |  'click'	  |
 | Options	           |  data options of cascade                                    |  IList<AntCheckbox> |  -	          |
 | Placeholder          |  input placeholder                                   |  string             |  'Please Select'	  |
+| Placement            |  Use preset popup align config from builtinPlacements.    | `BottomLeft` \| `BottomRight` \| `TopLeft` \| `TopRight` |  -  |
 | Size                 |  input size, one of 'large','middle' 'small'             |  string           |  无	          |
 | OnChange             |  callback when finishing cascader select (List<CascaderNode>, string, string) => void  |   -   |  -            |
 
diff --git a/site/AntDesign.Docs/Demos/Components/Cascader/doc/index.zh-CN.md b/site/AntDesign.Docs/Demos/Components/Cascader/doc/index.zh-CN.md
index 0c438cf0..ee883cbc 100644
--- a/site/AntDesign.Docs/Demos/Components/Cascader/doc/index.zh-CN.md
+++ b/site/AntDesign.Docs/Demos/Components/Cascader/doc/index.zh-CN.md
@@ -22,13 +22,14 @@ Cascader
 | 参数                 |  说明	                                          |  类型               |  默认值  |  
 | -------------------- | ---------------------------------------------------- | --------------------- | --------- |  
 | AllowClear           |  是否支持清除                                      |  bool               |  true	      |
-| BoundaryAdjustMode | `Dropdown` adjustment strategy (when for example browser resize is happening)         | TriggerBoundaryAdjustMode    | TriggerBoundaryAdjustMode.InView         |
+| BoundaryAdjustMode   |  边界自动调整的模式，默认在可视范围调整        | TriggerBoundaryAdjustMode    | TriggerBoundaryAdjustMode.InView         |
 | ChangeOnSelect       |  当此项为 true 时，点选每级菜单选项值都会发生变化  |  bool               |  false	      |
 | Style                |  自定义类名                                        |  string             |  -	          |
 | DefaultValue         |  默认的选中项                                      |  string             |  -	          |
 | ExpandTrigger        |  次级菜单的展开方式，可选 'click' 和 'hover'       |  string             |  'click'	  |
 | Options	           |  可选项数据源                                      |  IList<AntCheckbox> |  -	          |
 | Placeholder          |  输入框占位文本                                    |  string             |  '请选择'	  |
+| Placement            |  浮层预设位置                                      | `BottomLeft` \| `BottomRight` \| `TopLeft` \| `TopRight` |  -  |
 | Size                 |  输入框大小，可选 'large','middle' 'small'         |  string           |  无	          |
 | OnChange             |  选择完成后的回调 (List<CascaderNode>, string, string) => void  |   -   |  -            |