diff --git a/Assets/Zion/Scripts/ModelFunction/UAV/UnmannedAerialVehicleManage.cs b/Assets/Zion/Scripts/ModelFunction/UAV/UnmannedAerialVehicleManage.cs
index dff58f59..98e1944f 100644
--- a/Assets/Zion/Scripts/ModelFunction/UAV/UnmannedAerialVehicleManage.cs
+++ b/Assets/Zion/Scripts/ModelFunction/UAV/UnmannedAerialVehicleManage.cs
@@ -527,12 +527,15 @@ public class UnmannedAerialVehicleManage : MonoBehaviour
             {
                 if (!allColliders[i].GetComponent<Collider>().isTrigger && !attackColliders1.Contains(allColliders[i].GetComponent<Collider>()))
                 {
-                    Vector3 pos = gxWRJCamera.WorldToViewportPoint(allColliders[i].transform.position);
-                    bool ispcamera = (pos.x > 0 && pos.x < 1 && pos.y > 0 && pos.y < 1 && pos.z > 0);
-                    if (ispcamera)
+                    if (gxWRJCamera != null)
                     {
-                        if (!attackColliders1.Contains(allColliders[i].GetComponent<Collider>()))
-                            attackColliders1.Add(allColliders[i].GetComponent<Collider>());
+                        Vector3 pos = gxWRJCamera.WorldToViewportPoint(allColliders[i].transform.position);
+                        bool ispcamera = (pos.x > 0 && pos.x < 1 && pos.y > 0 && pos.y < 1 && pos.z > 0);
+                        if (ispcamera)
+                        {
+                            if (!attackColliders1.Contains(allColliders[i].GetComponent<Collider>()))
+                                attackColliders1.Add(allColliders[i].GetComponent<Collider>());
+                        }
                     }
                 }
             }