diff --git a/src/main/java/com/genersoft/iot/vmp/aiot/service/impl/AiConfigServiceImpl.java b/src/main/java/com/genersoft/iot/vmp/aiot/service/impl/AiConfigServiceImpl.java
index 19eefedd6..daf88d217 100644
--- a/src/main/java/com/genersoft/iot/vmp/aiot/service/impl/AiConfigServiceImpl.java
+++ b/src/main/java/com/genersoft/iot/vmp/aiot/service/impl/AiConfigServiceImpl.java
@@ -78,9 +78,9 @@ public class AiConfigServiceImpl implements IAiConfigService {
         // 1. 统一 device_id
         try {
             String defaultDeviceId = getDefaultDeviceId();
-            int updated = roiMapper.updateAllDeviceId(defaultDeviceId);
+            int updated = roiMapper.backfillDeviceId(defaultDeviceId);
             if (updated > 0) {
-                log.info("[AiConfig] 启动时统一 {} 条 ROI 的 device_id → {}", updated, defaultDeviceId);
+                log.info("[AiConfig] 启动时回填 {} 条空 device_id 的 ROI → {}", updated, defaultDeviceId);
             }
         } catch (Exception e) {
             log.warn("[AiConfig] 启动时修复 device_id 失败: {}", e.getMessage());