diff --git a/app/src/main/java/com/shuwei/intelligent/shelves/activity/HomeActivity.kt b/app/src/main/java/com/shuwei/intelligent/shelves/activity/HomeActivity.kt
index 9c5f2e8..7cd493f 100644
--- a/app/src/main/java/com/shuwei/intelligent/shelves/activity/HomeActivity.kt
+++ b/app/src/main/java/com/shuwei/intelligent/shelves/activity/HomeActivity.kt
@@ -231,11 +231,15 @@ class HomeActivity : BaseActivity() {
             return
         }
         list.clear()
-        val subList01 = tempList.subList(0, tempList.size / 2)
-        val subList02 = tempList.subList(tempList.size / 2, tempList.size)
-        repeat(tempList.size / 2) { index ->
-            list.add(subList01[index].also { it.deviceId = App.deviceId })
-            list.add(subList02[index].also { it.deviceId = App.deviceId })
+        val leftSize = (tempList.size + 1) / 2  // 左列长度（向上取整）
+        val rightSize = tempList.size / 2       // 右列长度（向下取整）
+        repeat(rightSize) { index ->
+            list.add(tempList[index].also { it.deviceId = App.deviceId })
+            list.add(tempList[leftSize + index].also { it.deviceId = App.deviceId })
+        }
+        // 处理奇数长度：左列比右列多一个
+        if (tempList.size % 2 != 0) {
+            list.add(tempList[rightSize].also { it.deviceId = App.deviceId })
         }
         shelfAdapter.notifyDataSetChanged()
     }