diff --git a/src/views/map/index.vue b/src/views/map/index.vue
index 40f3203..95915c3 100644
--- a/src/views/map/index.vue
+++ b/src/views/map/index.vue
@@ -1607,7 +1607,7 @@ export default {
           }
           const entity = new Cesium.Entity({
             id: 'trajectory',
-            polyline: { positions, width: 5.0, material: Cesium.Color.RED }
+            polyline: { positions, width: 5.0, material: Cesium.Color.RED, clampToGround: true }
           })
           const collection = new Cesium.CustomDataSource('trajectoryEntityCollection')
           collection.entities.add(entity)
@@ -1860,6 +1860,9 @@ export default {
                 cluster.billboard.show = true
                 cluster.billboard.id = cluster.label.id
                 cluster.billboard.verticalOrigin = Cesium.VerticalOrigin.BOTTOM
+                cluster.billboard.horizontalOrigin = Cesium.HorizontalOrigin.CENTER
+                cluster.billboard.heightReference = Cesium.HeightReference.CLAMP_TO_GROUND
+                cluster.billboard.disableDepthTestDistance = Number.POSITIVE_INFINITY
                 if (clusteredEntities.length >= 100) {
                   cluster.billboard.image = pin100
                 } else if (clusteredEntities.length >= 50) {