diff --git a/viewsh-module-ops/viewsh-module-ops-api/src/main/java/com/viewsh/module/ops/api/area/AreaDeviceApi.java b/viewsh-module-ops/viewsh-module-ops-api/src/main/java/com/viewsh/module/ops/api/area/AreaDeviceApi.java
index 5dd472a..c4b23cc 100644
--- a/viewsh-module-ops/viewsh-module-ops-api/src/main/java/com/viewsh/module/ops/api/area/AreaDeviceApi.java
+++ b/viewsh-module-ops/viewsh-module-ops-api/src/main/java/com/viewsh/module/ops/api/area/AreaDeviceApi.java
@@ -39,14 +39,14 @@ public interface AreaDeviceApi {
             @PathVariable("areaId") Long areaId
     );
 
-    @GetMapping(PREFIX + "/{areaId}/devices")
-    @Operation(summary = "查询区域设备列表（按类型）")
-    CommonResult<List<AreaDeviceDTO>> getDevicesByAreaAndType(
-            @Parameter(description = "区域ID", required = true, example = "1302")
-            @PathVariable("areaId") Long areaId,
-            @Parameter(description = "关联类型（BADGE/TRAFFIC_COUNTER/BEACON）", required = true, example = "BADGE")
-            @RequestParam("relationType") String relationType
-    );
+    @GetMapping(PREFIX + "/{areaId}/devices")
+    @Operation(summary = "查询区域设备列表（按类型）")
+    CommonResult<List<AreaDeviceDTO>> getDevicesByAreaAndType(
+            @Parameter(description = "区域ID", required = true, example = "1302")
+            @PathVariable("areaId") Long areaId,
+            @Parameter(description = "关联类型（BADGE/TRAFFIC_COUNTER/BEACON）", required = false, example = "BADGE")
+            @RequestParam(value = "relationType", required = false) String relationType
+    );
 
     // ==================== 按设备查询 ====================