diff --git a/src/utils/breaks_classification.js b/src/utils/breaks_classification.js
index a81bb32..a29a863 100644
--- a/src/utils/breaks_classification.js
+++ b/src/utils/breaks_classification.js
@@ -8,8 +8,10 @@
 function prettyBreaksClassification(data, n_classes) {
     if (data.length === 0) return [];
 
-    const min_val = Math.min(...data);
-    const max_val = Math.max(...data);
+    // const min_val = Math.min(...data);
+    // const max_val = Math.max(...data);
+    const min_val = data.reduce((min, val) => Math.min(min, val), Infinity);
+    const max_val = data.reduce((max, val) => Math.max(max, val), -Infinity);
     const data_range = max_val - min_val;
 
     // 计算基础间隔