diff --git a/components/table/doc/index.en-US.md b/components/table/doc/index.en-US.md
index 529ab835c6a..35af7bcc06b 100644
--- a/components/table/doc/index.en-US.md
+++ b/components/table/doc/index.en-US.md
@@ -75,7 +75,7 @@ The data passed to `[nzData]` will be export with [Template Context](https://ang
 | `[nzShowPagination]` | Whether show pagination component in bottom of the table | `boolean` | `true` |
 | `[nzPaginationPosition]` | Specify the position of Pagination | `'top' \| 'bottom' \| 'both'` | `bottom` |
 | `[nzBordered]` | Whether to show all table borders | `boolean` | `false` | ✅ |
-| `[nzWidthConfig]` | Set col width can not used with `nzWidth` of `th` | `string[]` | - |
+| `[nzWidthConfig]` | Set col width can not used with `nzWidth` of `th` | `string[]` | `[]` |
 | `[nzSize]` | Size of table | `'middle' \| 'small' \| 'default'` | `'default'` | ✅ |
 | `[nzLoading]` | Loading status of table | `boolean` | `false` |
 | `[nzLoadingIndicator]` | the spinning indicator | `TemplateRef<void>` | - |
diff --git a/components/table/doc/index.zh-CN.md b/components/table/doc/index.zh-CN.md
index 9ca6c90d768..9bc56e48e47 100644
--- a/components/table/doc/index.zh-CN.md
+++ b/components/table/doc/index.zh-CN.md
@@ -76,7 +76,7 @@ Table 组件同时具备了易用性和高度可定制性
 | `[nzShowPagination]` | 是否显示分页器 | `boolean` | `true` |
 | `[nzPaginationPosition]` | 指定分页显示的位置 | `'top' \| 'bottom' \| 'both'` | `bottom` |
 | `[nzBordered]` | 是否展示外边框和列边框 | `boolean` | `false` | ✅ |
-| `[nzWidthConfig]` | 表头分组时指定每列宽度，与 `th` 的 `nzWidth` 不可混用 | `string[]` | - |
+| `[nzWidthConfig]` | 表头分组时指定每列宽度，与 `th` 的 `nzWidth` 不可混用 | `string[]` | `[]` |
 | `[nzSize]` | 正常或迷你类型 | `'middle' \| 'small' \| 'default'` | `'default'` | ✅ |
 | `[nzLoading]` | 页面是否加载中 | `boolean` | `false` |
 | `[nzLoadingIndicator]` | 加载指示符 | `TemplateRef<void>` | - |
diff --git a/components/table/nz-table.component.html b/components/table/nz-table.component.html
index 42a7109aab1..4ee6e53297e 100644
--- a/components/table/nz-table.component.html
+++ b/components/table/nz-table.component.html
@@ -6,7 +6,7 @@
 <ng-template #colGroupTemplate>
   <colgroup>
     <col [style.width]="width" [style.minWidth]="width" *ngFor="let width of nzWidthConfig">
-    <ng-container *ngIf="!nzWidthConfig.length">
+    <ng-container *ngIf="(nzWidthConfig && !nzWidthConfig.length) || !nzWidthConfig">
       <col [style.width]="th.nzWidth" [style.minWidth]="th.nzWidth" *ngFor="let th of listOfNzThComponent">
     </ng-container>
   </colgroup>