diff --git a/unity/Assets/Light/scripts/LightSource.cs b/unity/Assets/Light/scripts/LightSource.cs
index b65410c..8bb2da7 100644
--- a/unity/Assets/Light/scripts/LightSource.cs
+++ b/unity/Assets/Light/scripts/LightSource.cs
@@ -14,6 +14,10 @@ namespace IndianOceanAssets.Engine2_5D
         [SerializeField] private float intensity = 1f;    // 光照强度 (0~1)
         [SerializeField] private bool registerOnStart = true;
 
+        [Header("位置调整")]
+        [Tooltip("光源相对于物体（或 followTarget）的位置偏移")]
+        [SerializeField] private Vector3 offset;
+
         [Header("可选：目标跟随（留空则跟随自身）")]
         [SerializeField] private Transform followTarget;
 
@@ -45,12 +49,13 @@ namespace IndianOceanAssets.Engine2_5D
         }
 
         /// <summary>
-        /// 返回光源在世界坐标的位置（XZ 平面）
+        /// 返回光源在世界坐标的位置（XZ 平面），含 offset 偏移
         /// </summary>
         public Vector2 GetWorldPositionXZ()
         {
             Transform t = followTarget != null ? followTarget : transform;
-            return new Vector2(t.position.x, t.position.z);
+            Vector3 pos = t.position + offset;
+            return new Vector2(pos.x, pos.z);
         }
 
         public float Radius => radius;
@@ -103,4 +108,4 @@ namespace IndianOceanAssets.Engine2_5D
                 LightMaskSystem.Instance.UnregisterLight(this);
         }
     }
-}
\ No newline at end of file
+}