diff --git a/src/main/java/cn/lihongjie/coal/pdcDeviceData/service/PdcDeviceDataService.java b/src/main/java/cn/lihongjie/coal/pdcDeviceData/service/PdcDeviceDataService.java
index 1f4dfbc9..c2146cb4 100644
--- a/src/main/java/cn/lihongjie/coal/pdcDeviceData/service/PdcDeviceDataService.java
+++ b/src/main/java/cn/lihongjie/coal/pdcDeviceData/service/PdcDeviceDataService.java
@@ -181,7 +181,13 @@ public class PdcDeviceDataService
                         with tmp as (select d.device_id,
 
                                             time_bucket_gapfill(cast(:bucket as interval), d.time) as tb,
-                                            interpolate(max(d.total_data))   as total_data
+                                            interpolate(max(d.total_data), (select ('2024-12-18 00:00:00'::timestamp, (select total_data
+                                                                                                                                           from t_pdc_device_data x
+                                                                                                                                           where x.time >= :startTime
+                                                                                                                                             AND x.time <= :endTime
+                                                                                                                                             and x.device_id = d.device_id
+                                                                                                                                           order by x.time
+                                                                                                                                           limit 1))))   as total_data
                                      from t_pdc_device_data d
                                               left join t_pdc_device pdc on d.device_id = pdc.id