diff --git a/src/component/FileManager/Explorer.js b/src/component/FileManager/Explorer.js
index daea6d2..583c1ea 100644
--- a/src/component/FileManager/Explorer.js
+++ b/src/component/FileManager/Explorer.js
@@ -16,6 +16,7 @@ import SadIcon from "@material-ui/icons/SentimentVeryDissatisfied";
 import classNames from "classnames";
 import ImgPreivew from "./ImgPreview";
 import pathHelper from "../../utils/page";
+import { isMac } from "../../utils"
 import { withRouter } from "react-router-dom";
 import {
     Table,
@@ -177,7 +178,7 @@ class ExplorerCompoment extends Component {
         super();
         this.keyMap = {
             DELETE_FILE: "del",
-            SELECT_ALL: "ctrl+a"
+            SELECT_ALL: `${isMac() ? 'command' : 'ctrl'}+a`
         };
 
         this.handlers = {
diff --git a/src/utils/index.js b/src/utils/index.js
index 9f6c7ec..7a9b6f2 100644
--- a/src/utils/index.js
+++ b/src/utils/index.js
@@ -188,4 +188,8 @@ export function getNumber(base,conditions){
         }
     })
     return base
+}
+
+export const isMac = () => {
+  return "MACINTEL" === navigator.platform.toUpperCase()
 }
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