diff --git a/lib/utils/utils.dart b/lib/utils/utils.dart
index e50c295c..9fcb70f9 100644
--- a/lib/utils/utils.dart
+++ b/lib/utils/utils.dart
@@ -209,9 +209,6 @@ class Utils {
     int minDiff = 127;
     int closestNumber = 0; // 初始化为0，表示没有找到比目标值小的整数
 
-    if (numbers.contains(target)) {
-      return target;
-    }
     // 向下查找
     try {
       for (int number in numbers) {
@@ -226,6 +223,20 @@ class Utils {
       }
     } catch (_) {}
 
+    // 向上查找
+    if (closestNumber == 0) {
+      try {
+        for (int number in numbers) {
+          int diff = (number - target).abs();
+
+          if (diff < minDiff) {
+            minDiff = diff;
+            closestNumber = number;
+          }
+        }
+      } catch (_) {}
+    }
+
     // 向上查找
     if (closestNumber == 0) {
       try {