diff --git a/src/step-item/props.ts b/src/step-item/props.ts
index 8b03c8bf5..6850a0b1f 100644
--- a/src/step-item/props.ts
+++ b/src/step-item/props.ts
@@ -11,10 +11,6 @@ const props: TdStepItemProps = {
     type: String,
     value: '',
   },
-  /** 组件类名，用于设置组件外层元素元素类名 */
-  externalClasses: {
-    type: Array,
-  },
   /** 图标。传入 slot 代表使用插槽，其他字符串代表使用内置图标 */
   icon: {
     type: String,
@@ -24,11 +20,6 @@ const props: TdStepItemProps = {
     type: String,
     value: 'default',
   },
-  /** 已废弃。子步骤条，仅支持 layout  = 'vertical' 时 */
-  subStepItems: {
-    type: Array,
-    value: [],
-  },
   /** 标题 */
   title: {
     type: String,
diff --git a/src/step-item/type.ts b/src/step-item/type.ts
index 17f32d3d3..1de063c98 100644
--- a/src/step-item/type.ts
+++ b/src/step-item/type.ts
@@ -13,13 +13,6 @@ export interface TdStepItemProps {
     type: StringConstructor;
     value?: string;
   };
-  /**
-   * 组件类名，用于设置组件外层元素元素类名
-   */
-  externalClasses?: {
-    type: ArrayConstructor;
-    value?: ['t-class', 't-class-content', 't-class-title', 't-class-description', 't-class-extra'];
-  };
   /**
    * 图标。传入 slot 代表使用插槽，其他字符串代表使用内置图标
    */
@@ -35,15 +28,6 @@ export interface TdStepItemProps {
     type: StringConstructor;
     value?: StepStatus;
   };
-  /**
-   * 子步骤条，仅支持 layout  = 'vertical' 时
-   * @default []
-   * @deprecated
-   */
-  subStepItems?: {
-    type: ArrayConstructor;
-    value?: SubStepItem[];
-  };
   /**
    * 标题
    * @default ''
@@ -55,8 +39,3 @@ export interface TdStepItemProps {
 }
 
 export type StepStatus = 'default' | 'process' | 'finish' | 'error';
-
-export interface SubStepItem {
-  status: StepStatus;
-  title: string;
-}
diff --git a/src/steps/README.en-US.md b/src/steps/README.en-US.md
index ab3f840af..3e4127327 100644
--- a/src/steps/README.en-US.md
+++ b/src/steps/README.en-US.md
@@ -1,38 +1,56 @@
 :: BASE_DOC ::
 
 ## API
+
 ### Steps Props
 
 name | type | default | description | required
 -- | -- | -- | -- | --
+style | Object | - | CSS(Cascading Style Sheets) | N
+custom-style | Object | - | CSS(Cascading Style Sheets)，used to set style on virtual component | N
 current | String / Number | - | \- | N
 default-current | String / Number | undefined | uncontrolled property | N
-current-status | String | process | options：default/process/finish/error | N
-external-classes | Array | - | `['t-class']` | N
-layout | String | horizontal | options：horizontal/vertical | N
+current-status | String | process | options: default/process/finish/error | N
+layout | String | horizontal | options: horizontal/vertical | N
 readonly | Boolean | false | \- | N
-sequence | String | positive | options：positive/reverse | N
-theme | String | default | options：default/dot | N
+sequence | String | positive | options: positive/reverse | N
+theme | String | default | options: default/dot | N
 
 ### Steps Events
 
 name | params | description
 -- | -- | --
 change | `({current: string \| number, previous: string \| number})` | \-
+### Steps External Classes
+
+className | Description
+-- | --
+t-class | \-
+
 
 ### StepItem Props
 
 name | type | default | description | required
 -- | -- | -- | -- | --
+style | Object | - | CSS(Cascading Style Sheets) | N
+custom-style | Object | - | CSS(Cascading Style Sheets)，used to set style on virtual component | N
 content | String / Slot | '' | [see more ts definition](https://github.com/Tencent/tdesign-miniprogram/blob/develop/src/common/common.ts) | N
-external-classes | Array | - | `['t-class', 't-class-content', 't-class-title', 't-class-description', 't-class-extra']` | N
 icon | String / Slot | - | [see more ts definition](https://github.com/Tencent/tdesign-miniprogram/blob/develop/src/common/common.ts) | N
-status | String | default | options：default/process/finish/error。Typescript：`StepStatus` `type StepStatus = 'default' \| 'process' \| 'finish' \| 'error'`。[see more ts definition](https://github.com/Tencent/tdesign-miniprogram/tree/develop/src/step-item/type.ts) | N
+status | String | default | options: default/process/finish/error。Typescript：`StepStatus` `type StepStatus = 'default' \| 'process' \| 'finish' \| 'error'`。[see more ts definition](https://github.com/Tencent/tdesign-miniprogram/tree/develop/src/step-item/type.ts) | N
 sub-step-items | Array | [] | `deprecated`。Typescript：`SubStepItem[]` `interface SubStepItem { status: StepStatus, title: string }`。[see more ts definition](https://github.com/Tencent/tdesign-miniprogram/tree/develop/src/step-item/type.ts) | N
 title | String / Slot | '' | [see more ts definition](https://github.com/Tencent/tdesign-miniprogram/blob/develop/src/common/common.ts) | N
+### StepItem External Classes
 
+className | Description
+-- | --
+t-class | class name of root node
+t-class-content | \-
+t-class-description | \-
+t-class-extra | \-
+t-class-title | \-
 
 ### CSS Variables
+
 The component provides the following CSS variables, which can be used to customize styles.
 Name | Default Value | Description 
 -- | -- | --
@@ -61,4 +79,4 @@ Name | Default Value | Description
 --td-step-item-process-circle-color | @font-white-1 | - 
 --td-step-item-process-dot-border-color | @brand-color | - 
 --td-step-item-process-icon-color | @brand-color | - 
---td-step-item-process-title-color | @brand-color | - 
+--td-step-item-process-title-color | @brand-color | -
\ No newline at end of file
diff --git a/src/steps/README.md b/src/steps/README.md
index 8bb27db79..af1525fdb 100644
--- a/src/steps/README.md
+++ b/src/steps/README.md
@@ -61,10 +61,13 @@ isComponent: true
 {{ special }}
 
 ## API
+
 ### Steps Props
 
-名称 | 类型 | 默认值 | 说明 | 必传
+名称 | 类型 | 默认值 | 描述 | 必传
 -- | -- | -- | -- | --
+style | Object | - | 样式 | N
+custom-style | Object | - | 样式，一般用于开启虚拟化组件节点场景 | N
 current | String / Number | - | 当前步骤，即整个步骤条进度。默认根据步骤下标判断步骤的完成状态，当前步骤为进行中，当前步骤之前的步骤为已完成，当前步骤之后的步骤为未开始。如果每个步骤没有设置 value，current 值为步骤长度则表示所有步骤已完成。如果每个步骤设置了自定义 value，则 current = 'FINISH' 表示所有状态完成 | N
 default-current | String / Number | undefined | 当前步骤，即整个步骤条进度。默认根据步骤下标判断步骤的完成状态，当前步骤为进行中，当前步骤之前的步骤为已完成，当前步骤之后的步骤为未开始。如果每个步骤没有设置 value，current 值为步骤长度则表示所有步骤已完成。如果每个步骤设置了自定义 value，则 current = 'FINISH' 表示所有状态完成。非受控属性 | N
 current-status | String | process | 用于控制 current 指向的步骤条的状态。可选项：default/process/finish/error | N
@@ -78,32 +81,36 @@ theme | String | default | 步骤条风格。可选项：default/dot | N
 名称 | 参数 | 描述
 -- | -- | --
 change | `({current: string \| number, previous: string \| number})` | 当前步骤发生变化时触发
+### Steps External Classes
 
-### Steps 外部样式类
-类名 | 说明
--- | -- 
+类名 | 描述
+-- | --
 t-class | 根节点样式类
 
+
 ### StepItem Props
 
-名称 | 类型 | 默认值 | 说明 | 必传
+名称 | 类型 | 默认值 | 描述 | 必传
 -- | -- | -- | -- | --
+style | Object | - | 样式 | N
+custom-style | Object | - | 样式，一般用于开启虚拟化组件节点场景 | N
 content | String / Slot | '' | 步骤描述。[通用类型定义](https://github.com/Tencent/tdesign-miniprogram/blob/develop/src/common/common.ts) | N
 icon | String / Slot | - | 图标。传入 slot 代表使用插槽，其他字符串代表使用内置图标。[通用类型定义](https://github.com/Tencent/tdesign-miniprogram/blob/develop/src/common/common.ts) | N
 status | String | default | 当前步骤的状态：默认状态（未开始）、进行中状态、完成状态、错误状态。可选项：default/process/finish/error。TS 类型：`StepStatus` `type StepStatus = 'default' \| 'process' \| 'finish' \| 'error'`。[详细类型定义](https://github.com/Tencent/tdesign-miniprogram/tree/develop/src/step-item/type.ts) | N
 sub-step-items | Array | [] | 已废弃。子步骤条，仅支持 layout  = 'vertical' 时。TS 类型：`SubStepItem[]` `interface SubStepItem { status: StepStatus, title: string }`。[详细类型定义](https://github.com/Tencent/tdesign-miniprogram/tree/develop/src/step-item/type.ts) | N
 title | String / Slot | '' | 标题。[通用类型定义](https://github.com/Tencent/tdesign-miniprogram/blob/develop/src/common/common.ts) | N
+### StepItem External Classes
 
-### StepItem 外部样式类
-类名 | 说明
--- | -- 
+类名 | 描述
+-- | --
 t-class | 根节点样式类
 t-class-content | 内容样式类
-t-class-title | 标题样式类
 t-class-description | 描述样式类
 t-class-extra | 额外样式类
+t-class-title | 标题样式类
+
+### CSS Variables
 
-### CSS 变量
 组件提供了下列 CSS 变量，可用于自定义样式。
 名称 | 默认值 | 描述 
 -- | -- | --
@@ -132,4 +139,4 @@ t-class-extra | 额外样式类
 --td-step-item-process-circle-color | @font-white-1 | - 
 --td-step-item-process-dot-border-color | @brand-color | - 
 --td-step-item-process-icon-color | @brand-color | - 
---td-step-item-process-title-color | @brand-color | - 
+--td-step-item-process-title-color | @brand-color | -
\ No newline at end of file
diff --git a/src/steps/props.ts b/src/steps/props.ts
index b24e39b48..f092105cf 100644
--- a/src/steps/props.ts
+++ b/src/steps/props.ts
@@ -20,10 +20,6 @@ const props: TdStepsProps = {
     type: String,
     value: 'process',
   },
-  /** 组件类名，用于设置组件外层元素元素类名 */
-  externalClasses: {
-    type: Array,
-  },
   /** 步骤条方向，有两种：横向和纵向 */
   layout: {
     type: String,
@@ -34,11 +30,6 @@ const props: TdStepsProps = {
     type: Boolean,
     value: false,
   },
-  /** 步骤条分割符 */
-  separator: {
-    type: String,
-    value: 'line',
-  },
   /** 步骤条顺序 */
   sequence: {
     type: String,
diff --git a/src/steps/type.ts b/src/steps/type.ts
index 34ec9a175..5b787d923 100644
--- a/src/steps/type.ts
+++ b/src/steps/type.ts
@@ -27,13 +27,6 @@ export interface TdStepsProps {
     type: StringConstructor;
     value?: 'default' | 'process' | 'finish' | 'error';
   };
-  /**
-   * 组件类名，用于设置组件外层元素元素类名
-   */
-  externalClasses?: {
-    type: ArrayConstructor;
-    value?: ['t-class'];
-  };
   /**
    * 步骤条方向，有两种：横向和纵向
    * @default horizontal
@@ -50,14 +43,6 @@ export interface TdStepsProps {
     type: BooleanConstructor;
     value?: boolean;
   };
-  /**
-   * 步骤条分割符
-   * @default line
-   */
-  separator?: {
-    type: StringConstructor;
-    value?: 'line' | 'dashed' | 'arrow';
-  };
   /**
    * 步骤条顺序
    * @default positive