diff --git a/employee-app/health-monitor/environment/device-detail.html b/employee-app/health-monitor/environment/device-detail.html
index b10a414..e66fe8e 100644
--- a/employee-app/health-monitor/environment/device-detail.html
+++ b/employee-app/health-monitor/environment/device-detail.html
@@ -578,14 +578,19 @@ function showTrendTip(e, el) {
   var val = td.points[idx];
   var unit = td.unit || '';
   var color = td.isAQI ? getAqiColor(val) : chartLine;
-  var levelHtml = td.isAQI ? '<span class="chart-tooltip__label" style="color:' + color + ';"> ' + getAqiLevel(val) + '</span>' : '';
   document.getElementById('tooltipDate').textContent = dateStr;
-  document.getElementById('tooltipBody').innerHTML =
-    '<div class="chart-tooltip__row">' +
-    '<span class="chart-tooltip__dot" style="background:' + color + '"></span>' +
-    '<span class="chart-tooltip__label">数值</span>' +
-    '<span class="chart-tooltip__val">' + val + (unit ? ' ' + unit : '') + '</span>' +
-    levelHtml + '</div>';
+  if (td.isAQI) {
+    var level = getAqiLevel(val);
+    document.getElementById('tooltipBody').innerHTML =
+      '<div class="chart-tooltip__row">' +
+      '<span class="chart-tooltip__dot" style="background:' + color + '"></span>' +
+      '<span class="chart-tooltip__label" style="color:' + color + ';font-weight:600;">' + level + '</span></div>';
+  } else {
+    document.getElementById('tooltipBody').innerHTML =
+      '<div class="chart-tooltip__row">' +
+      '<span class="chart-tooltip__label">数值</span>' +
+      '<span class="chart-tooltip__val">' + val + (unit ? ' ' + unit : '') + '</span></div>';
+  }
   showTooltip(el);
 }