diff --git a/static/js/sensor-1.js b/static/js/sensor-1.js
index d437839..90ce3de 100644
--- a/static/js/sensor-1.js
+++ b/static/js/sensor-1.js
@@ -21,7 +21,7 @@ document.addEventListener('DOMContentLoaded', function () {
             .then(response => response.json())
             .then(data => {
                 // 如果已有200个数据则移除最旧的一条
-                if (timestamps.length >= 200) {
+                if (timestamps.length >= 50) {
                     timestamps.shift();
                     temperatures.shift();
                 }