diff --git a/other-module/canteen-device/canteen-nutrition-scale/01-meal-start.html b/other-module/canteen-device/canteen-nutrition-scale/01-meal-start.html
index e49d0c9..33260df 100644
--- a/other-module/canteen-device/canteen-nutrition-scale/01-meal-start.html
+++ b/other-module/canteen-device/canteen-nutrition-scale/01-meal-start.html
@@ -943,21 +943,5 @@
     init();
   </script>
 
-/* 返回按钮：从哪来回哪去 */
-(function() {
-  var backBtn = document.getElementById('backBtn');
-  if (backBtn) {
-    var params = new URLSearchParams(window.location.search);
-    var referer = params.get('referer');
-    if (referer) {
-      backBtn.href = referer;
-    } else if (document.referrer && document.referrer.indexOf(window.location.hostname) !== -1) {
-      backBtn.href = document.referrer;
-    } else {
-      backBtn.href = 'index.html';
-    }
-  }
-})();
-
 </body>
 </html>
diff --git a/other-module/canteen-device/canteen-nutrition-scale/02-dish-display.html b/other-module/canteen-device/canteen-nutrition-scale/02-dish-display.html
index 1eba127..e007c98 100644
--- a/other-module/canteen-device/canteen-nutrition-scale/02-dish-display.html
+++ b/other-module/canteen-device/canteen-nutrition-scale/02-dish-display.html
@@ -313,21 +313,5 @@
     });
   </script>
 
-/* 返回按钮：从哪来回哪去 */
-(function() {
-  var backBtn = document.getElementById('backBtn');
-  if (backBtn) {
-    var params = new URLSearchParams(window.location.search);
-    var referer = params.get('referer');
-    if (referer) {
-      backBtn.href = referer;
-    } else if (document.referrer && document.referrer.indexOf(window.location.hostname) !== -1) {
-      backBtn.href = document.referrer;
-    } else {
-      backBtn.href = 'index.html';
-    }
-  }
-})();
-
 </body>
 </html>
diff --git a/other-module/canteen-device/canteen-nutrition-scale/03-meal-pickup-dual-large.html b/other-module/canteen-device/canteen-nutrition-scale/03-meal-pickup-dual-large.html
index d3641d1..008ed37 100644
--- a/other-module/canteen-device/canteen-nutrition-scale/03-meal-pickup-dual-large.html
+++ b/other-module/canteen-device/canteen-nutrition-scale/03-meal-pickup-dual-large.html
@@ -307,21 +307,6 @@
     }
     document.getElementById('dishImg').innerHTML = dishFoodSVG(120, 90, ['#C87030', '#E8A040', '#D08028']);
   
-/* 返回按钮：从哪来回哪去 */
-(function() {
-  var backBtn = document.getElementById('backBtn');
-  if (backBtn) {
-    var params = new URLSearchParams(window.location.search);
-    var referer = params.get('referer');
-    if (referer) {
-      backBtn.href = referer;
-    } else if (document.referrer && document.referrer.indexOf(window.location.hostname) !== -1) {
-      backBtn.href = document.referrer;
-    } else {
-      backBtn.href = 'index.html';
-    }
-  }
-})();
 
   </script>
 </body>
diff --git a/other-module/canteen-device/canteen-nutrition-scale/03-meal-pickup-dual-small.html b/other-module/canteen-device/canteen-nutrition-scale/03-meal-pickup-dual-small.html
index 095e018..9da800f 100644
--- a/other-module/canteen-device/canteen-nutrition-scale/03-meal-pickup-dual-small.html
+++ b/other-module/canteen-device/canteen-nutrition-scale/03-meal-pickup-dual-small.html
@@ -177,21 +177,6 @@
     </div>
   </div>
 <script>
-/* 返回按钮：从哪来回哪去 */
-(function() {
-  var backBtn = document.getElementById('backBtn');
-  if (backBtn) {
-    var params = new URLSearchParams(window.location.search);
-    var referer = params.get('referer');
-    if (referer) {
-      backBtn.href = referer;
-    } else if (document.referrer && document.referrer.indexOf(window.location.hostname) !== -1) {
-      backBtn.href = document.referrer;
-    } else {
-      backBtn.href = 'index.html';
-    }
-  }
-})();
 </script>
 </body>
 </html>
diff --git a/other-module/canteen-device/canteen-nutrition-scale/03-meal-pickup.html b/other-module/canteen-device/canteen-nutrition-scale/03-meal-pickup.html
index 72ab79b..08c710d 100644
--- a/other-module/canteen-device/canteen-nutrition-scale/03-meal-pickup.html
+++ b/other-module/canteen-device/canteen-nutrition-scale/03-meal-pickup.html
@@ -544,21 +544,6 @@
     // 宫保鸡丁：暖橙金
     document.getElementById('dishEmoji').innerHTML = dishFoodSVG(48, 48, ['#C87030', '#E8A040', '#D08028']);
   
-/* 返回按钮：从哪来回哪去 */
-(function() {
-  var backBtn = document.getElementById('backBtn');
-  if (backBtn) {
-    var params = new URLSearchParams(window.location.search);
-    var referer = params.get('referer');
-    if (referer) {
-      backBtn.href = referer;
-    } else if (document.referrer && document.referrer.indexOf(window.location.hostname) !== -1) {
-      backBtn.href = document.referrer;
-    } else {
-      backBtn.href = 'index.html';
-    }
-  }
-})();
 
   </script>
 </body>
diff --git a/other-module/canteen-device/canteen-nutrition-scale/04-settings.html b/other-module/canteen-device/canteen-nutrition-scale/04-settings.html
index 0f5a352..83428aa 100644
--- a/other-module/canteen-device/canteen-nutrition-scale/04-settings.html
+++ b/other-module/canteen-device/canteen-nutrition-scale/04-settings.html
@@ -523,21 +523,5 @@
     });
   </script>
 
-/* 返回按钮：从哪来回哪去 */
-(function() {
-  var backBtn = document.getElementById('backBtn');
-  if (backBtn) {
-    var params = new URLSearchParams(window.location.search);
-    var referer = params.get('referer');
-    if (referer) {
-      backBtn.href = referer;
-    } else if (document.referrer && document.referrer.indexOf(window.location.hostname) !== -1) {
-      backBtn.href = document.referrer;
-    } else {
-      backBtn.href = 'index.html';
-    }
-  }
-})();
-
 </body>
 </html>
\ No newline at end of file
diff --git a/other-module/canteen-device/canteen-nutrition-scale/05-dish-sampling.html b/other-module/canteen-device/canteen-nutrition-scale/05-dish-sampling.html
index 37332b3..c5a4c40 100644
--- a/other-module/canteen-device/canteen-nutrition-scale/05-dish-sampling.html
+++ b/other-module/canteen-device/canteen-nutrition-scale/05-dish-sampling.html
@@ -674,21 +674,5 @@ function bindEvents() {
 init();
 </script>
 
-/* 返回按钮：从哪来回哪去 */
-(function() {
-  var backBtn = document.getElementById('backBtn');
-  if (backBtn) {
-    var params = new URLSearchParams(window.location.search);
-    var referer = params.get('referer');
-    if (referer) {
-      backBtn.href = referer;
-    } else if (document.referrer && document.referrer.indexOf(window.location.hostname) !== -1) {
-      backBtn.href = document.referrer;
-    } else {
-      backBtn.href = 'index.html';
-    }
-  }
-})();
-
 </body>
 </html>
diff --git a/other-module/canteen-device/canteen-nutrition-scale/06-sampling-history.html b/other-module/canteen-device/canteen-nutrition-scale/06-sampling-history.html
index d29890e..0c4ee81 100644
--- a/other-module/canteen-device/canteen-nutrition-scale/06-sampling-history.html
+++ b/other-module/canteen-device/canteen-nutrition-scale/06-sampling-history.html
@@ -561,21 +561,5 @@ function resampleDish() {
 renderWaterfall();
 </script>
 
-/* 返回按钮：从哪来回哪去 */
-(function() {
-  var backBtn = document.getElementById('backBtn');
-  if (backBtn) {
-    var params = new URLSearchParams(window.location.search);
-    var referer = params.get('referer');
-    if (referer) {
-      backBtn.href = referer;
-    } else if (document.referrer && document.referrer.indexOf(window.location.hostname) !== -1) {
-      backBtn.href = document.referrer;
-    } else {
-      backBtn.href = 'index.html';
-    }
-  }
-})();
-
 </body>
 </html>