diff --git a/src/scene/CesiumGlobe.js b/src/scene/CesiumGlobe.js
index ddd8569..2657c21 100644
--- a/src/scene/CesiumGlobe.js
+++ b/src/scene/CesiumGlobe.js
@@ -446,7 +446,7 @@ export class CesiumGlobe {
             fillColor: black,
             style: Cesium.LabelStyle.FILL,
             heightReference: Cesium.HeightReference.CLAMP_TO_GROUND,
-            disableDepthTestDistance: 0, // 背面（视野外）不渲染
+            disableDepthTestDistance: 1000, // 1km 内不深度测试（近处不消失），远处仍遮挡背面
             distanceDisplayCondition: new Cesium.DistanceDisplayCondition(0, 1e7),
             scaleByDistance: new Cesium.NearFarScalar(1e4, 20 / 15, 6e6, 1.0),
             translucencyByDistance: new Cesium.NearFarScalar(9e6, 1.0, 1e7, 0.0),
@@ -528,7 +528,7 @@ export class CesiumGlobe {
         verticalOrigin: Cesium.VerticalOrigin.BOTTOM,
         pixelOffset: new Cesium.Cartesian2(0, -6),
         heightReference: Cesium.HeightReference.CLAMP_TO_GROUND,
-        disableDepthTestDistance: 0, // 背面（视野外）不渲染
+        disableDepthTestDistance: 1000, // 1km 内不深度测试（近处不消失），远处仍遮挡背面
         distanceDisplayCondition: ddc,
         translucencyByDistance: tdc,
       });