diff --git a/packages/s2-core/src/utils/export/copy/base-data-cell-copy.ts b/packages/s2-core/src/utils/export/copy/base-data-cell-copy.ts
index 8201f5fd91..3f6d1de3d2 100644
--- a/packages/s2-core/src/utils/export/copy/base-data-cell-copy.ts
+++ b/packages/s2-core/src/utils/export/copy/base-data-cell-copy.ts
@@ -91,4 +91,11 @@ export abstract class BaseDataCellCopy {
 
     return ((value) => value) as Formatter;
   }
+
+  /**
+   * Safari 等不支持 requestIdleCallback 的浏览器, 降级为同步
+   */
+  protected isEnableASync() {
+    return this.config.async && !!window.requestIdleCallback;
+  }
 }
diff --git a/packages/s2-core/src/utils/export/copy/pivot-data-cell-copy.ts b/packages/s2-core/src/utils/export/copy/pivot-data-cell-copy.ts
index 72e21f42cb..19c82313f5 100644
--- a/packages/s2-core/src/utils/export/copy/pivot-data-cell-copy.ts
+++ b/packages/s2-core/src/utils/export/copy/pivot-data-cell-copy.ts
@@ -415,7 +415,7 @@ export class PivotDataCellCopy extends BaseDataCellCopy {
     let dataMatrix: SimpleData[][] = [];
 
     // 把两类导出都封装成异步的，保证导出类型的一致
-    if (this.config.async) {
+    if (this.isEnableASync()) {
       dataMatrix =
         (await this.getDataMatrixByHeaderNodeRIC()) as SimpleData[][];
     } else {
diff --git a/packages/s2-core/src/utils/export/copy/table-copy.ts b/packages/s2-core/src/utils/export/copy/table-copy.ts
index 92dbda7abb..dc346f9f11 100644
--- a/packages/s2-core/src/utils/export/copy/table-copy.ts
+++ b/packages/s2-core/src/utils/export/copy/table-copy.ts
@@ -227,7 +227,7 @@ class TableDataCellCopy extends BaseDataCellCopy {
   }
 
   async asyncProcessSelectedTable(allSelected = false): Promise<CopyableList> {
-    const matrix = this.config.async
+    const matrix = this.isEnableASync()
       ? await this.getDataMatrixRIC()
       : await Promise.resolve(this.getDataMatrix());
 
diff --git a/s2-site/docs/common/copy-export.zh.md b/s2-site/docs/common/copy-export.zh.md
index 1c30991fa3..77309efa5c 100644
--- a/s2-site/docs/common/copy-export.zh.md
+++ b/s2-site/docs/common/copy-export.zh.md
@@ -263,7 +263,7 @@ download(data, 'filename') // filename.csv
 | split       | 分隔符    | `string`       |     | ✓    |
 | formatOptions  | 是否使用 [S2DataConfig.Meta](/api/general/s2-data-config#meta) 进行格式化，可以分别对数据单元格和行列头进行格式化，传 `boolean` 会同时对单元格和行列头生效。 | `boolean \|  { formatHeader?: boolean, formatData?: boolean }`| `true`  |      |
 | customTransformer  | 导出时支持自定义 (transformer) 数据导出格式化方法  | (transformer: `Transformer`) => [`Partial<Transformer>`](#transformer)      |  |      |
-| async  | 是否异步复制/导出        | boolean      | `true`         |      |
+| async  | 是否异步复制/导出（当浏览器不支持 `requestIdleCallback` 时，会强制降级为**同步**)       | boolean      | `true`         |      |
 
 ##### copyToClipboard