diff --git a/src/routes/mobile/IndexMobile.js b/src/routes/mobile/IndexMobile.js
index fb6423e..b683d36 100644
--- a/src/routes/mobile/IndexMobile.js
+++ b/src/routes/mobile/IndexMobile.js
@@ -78,7 +78,7 @@ class IndexMobile extends React.Component {
       const mine = commonFunc.showLocalMessage(this.props, 'mine', '我的');
       scene
       const originTitle = {
-        message: message ,
+        message: message,
         scene: scene,
         workbench: workbench,
         device: device,
@@ -94,7 +94,24 @@ class IndexMobile extends React.Component {
       }
     }
   }
-
+  componentDidMount() {
+    // 监听系统返回键
+    const { plus } = window;
+    plus?.key?.addEventListener('backbutton', () => {
+      if (location.pathname === '/indexMobile') {
+        // 首页双击返回
+        if (this.backPressedOnce) {
+          plus.runtime.quit();
+        } else {
+          this.backPressedOnce = true;
+          plus.nativeUI.toast('再按一次退出应用');
+          setTimeout(() => { this.backPressedOnce = false; }, 2000);
+        }
+      } else {
+        window.history.back(-1);
+      }
+    });
+  }
   handleTouchStart = e => {
     this.setState({
       touchStartPageX: e.changedTouches[0].pageX,
@@ -115,7 +132,7 @@ class IndexMobile extends React.Component {
       const { plus } = window;
       if (location.pathname === "/indexMobile") {
         alert("确定退出吗?", "", [
-          { text: "取消", onPress: () => {} },
+          { text: "取消", onPress: () => { } },
           { text: "是", onPress: () => plus.runtime.quit() }, // 关闭app
         ]);
       } else {
@@ -227,7 +244,7 @@ class IndexMobile extends React.Component {
       if (location.pathname === "/indexMobile/quotationDetail") {
         return (
 
-           <QuotationDetail {...this.props} sModelType={pageText} sModelsId="101251240115016076506222050" />
+          <QuotationDetail {...this.props} sModelType={pageText} sModelsId="101251240115016076506222050" />
         )
       } else {
         return (
@@ -277,12 +294,12 @@ class IndexMobile extends React.Component {
           style={
             this.state.fullScreen
               ? {
-                  position: "fixed",
-                  width: "100%",
-                  top: "40px",
-                  bottom: 0,
-                  background: "#fff",
-                }
+                position: "fixed",
+                width: "100%",
+                top: "40px",
+                bottom: 0,
+                background: "#fff",
+              }
               : { height: 400 }
           }
           onTouchStart={this.handleTouchStart.bind(this)}
@@ -362,7 +379,7 @@ class IndexMobile extends React.Component {
                 commonBusiness.clearSocketData({ token, value: {}, sModelsId: 100 });
                 this.setState({
                   selectedTab: "scene",
-                  title:scene,
+                  title: scene,
                 });
                 history.push("/indexMobile");
               }}