diff --git a/src/views/oneMap/BIM/Tunnel.vue b/src/views/oneMap/BIM/Tunnel.vue
index e00745b..fa4602b 100644
--- a/src/views/oneMap/BIM/Tunnel.vue
+++ b/src/views/oneMap/BIM/Tunnel.vue
@@ -436,7 +436,7 @@
   // Scene.fog = new THREE.Fog(0x1784f9, 50, 2000); // 距离10开始，到200结束
   //  创建平行光源
   // const directionalLight = new THREE.DirectionalLight(0xffffff, 0.6);
-  const directionalLight = new THREE.DirectionalLight(0xcccccc, 10);
+  const directionalLight = new THREE.DirectionalLight(0xcccccc, 5);
   directionalLight.position.set(-2500, 100, 100);
   Scene.add(directionalLight);
   // 创建环境光