diff --git a/dongjian-dashboard-back-controller/src/main/java/com/dongjian/dashboard/back/controller/DeviceDataAccumulateController.java b/dongjian-dashboard-back-controller/src/main/java/com/dongjian/dashboard/back/controller/DeviceDataAccumulateController.java
index dbde976..e836d4a 100644
--- a/dongjian-dashboard-back-controller/src/main/java/com/dongjian/dashboard/back/controller/DeviceDataAccumulateController.java
+++ b/dongjian-dashboard-back-controller/src/main/java/com/dongjian/dashboard/back/controller/DeviceDataAccumulateController.java
@@ -95,7 +95,7 @@ public class DeviceDataAccumulateController {
 
         response.setContentType("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet");
         response.setCharacterEncoding("utf-8");
-        String fileName = URLEncoder.encode("積算データ", StandardCharsets.UTF_8).replace("+", "%20");
+        String fileName = URLEncoder.encode("積算データ"+CommonUtil.generateSuffix(), StandardCharsets.UTF_8).replace("+", "%20");
         response.setHeader("Content-disposition", "attachment;filename*=utf-8''" + fileName + ".xlsx");
 
         PageInfo<DeviceAccumulateData> pageData = deviceDataAccumulateService.getDataList(pageSearchParam, CompanyId, UserId, LanguageType);
diff --git a/dongjian-dashboard-back-controller/src/main/java/com/dongjian/dashboard/back/controller/DeviceDataAlarmController.java b/dongjian-dashboard-back-controller/src/main/java/com/dongjian/dashboard/back/controller/DeviceDataAlarmController.java
index 7fbe789..fd4f6d9 100644
--- a/dongjian-dashboard-back-controller/src/main/java/com/dongjian/dashboard/back/controller/DeviceDataAlarmController.java
+++ b/dongjian-dashboard-back-controller/src/main/java/com/dongjian/dashboard/back/controller/DeviceDataAlarmController.java
@@ -17,6 +17,7 @@ import com.dongjian.dashboard.back.dto.device.WindowAlertQueryRequest;
 import com.dongjian.dashboard.back.easyexcel.ExportDeviceAlarmDataDTO;
 import com.dongjian.dashboard.back.easyexcel.LanguageDynamicHeaderAdapter;
 import com.dongjian.dashboard.back.service.DeviceDataAlarmService;
+import com.dongjian.dashboard.back.util.CommonUtil;
 import com.dongjian.dashboard.back.vo.data.DeviceAlarmData;
 import com.dongjian.dashboard.back.vo.data.HandleHistoryDataVO;
 import com.dongjian.dashboard.back.vo.device.WindowAlertVO;
@@ -94,7 +95,7 @@ public class DeviceDataAlarmController {
 
         response.setContentType("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet");
         response.setCharacterEncoding("utf-8");
-        String fileName = URLEncoder.encode("警報データ", StandardCharsets.UTF_8).replace("+", "%20");
+        String fileName = URLEncoder.encode("警報データ"+ CommonUtil.generateSuffix(), StandardCharsets.UTF_8).replace("+", "%20");
         response.setHeader("Content-disposition", "attachment;filename*=utf-8''" + fileName + ".xlsx");
 
         PageInfo<DeviceAlarmData> pageData = deviceDataAlarmService.getDataList(pageSearchParam, CompanyId, UserId, LanguageType);
diff --git a/dongjian-dashboard-back-controller/src/main/java/com/dongjian/dashboard/back/controller/DeviceDataBaStatusController.java b/dongjian-dashboard-back-controller/src/main/java/com/dongjian/dashboard/back/controller/DeviceDataBaStatusController.java
index 020373d..1f1c62b 100644
--- a/dongjian-dashboard-back-controller/src/main/java/com/dongjian/dashboard/back/controller/DeviceDataBaStatusController.java
+++ b/dongjian-dashboard-back-controller/src/main/java/com/dongjian/dashboard/back/controller/DeviceDataBaStatusController.java
@@ -15,6 +15,7 @@ import com.dongjian.dashboard.back.easyexcel.ExportDeviceBaStatusDataDTO;
 import com.dongjian.dashboard.back.easyexcel.LanguageDynamicHeaderAdapter;
 import com.dongjian.dashboard.back.service.DeviceDataBaStatusService;
 import com.dongjian.dashboard.back.service.common.CommonOpt;
+import com.dongjian.dashboard.back.util.CommonUtil;
 import com.dongjian.dashboard.back.vo.data.DeviceBaStatusData;
 import com.dongjian.dashboard.back.vo.device.LineData;
 import io.swagger.v3.oas.annotations.Operation;
@@ -93,7 +94,7 @@ public class DeviceDataBaStatusController {
 
         response.setContentType("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet");
         response.setCharacterEncoding("utf-8");
-        String fileName = URLEncoder.encode("稼働設備", StandardCharsets.UTF_8).replace("+", "%20");
+        String fileName = URLEncoder.encode("稼働設備"+ CommonUtil.generateSuffix(), StandardCharsets.UTF_8).replace("+", "%20");
         response.setHeader("Content-disposition", "attachment;filename*=utf-8''" + fileName + ".xlsx");
 
         PageInfo<DeviceBaStatusData> pageData = deviceDataBaStatusService.getDataList(pageSearchParam, CompanyId, UserId, LanguageType);
diff --git a/dongjian-dashboard-back-controller/src/main/java/com/dongjian/dashboard/back/controller/DeviceDataMeasureController.java b/dongjian-dashboard-back-controller/src/main/java/com/dongjian/dashboard/back/controller/DeviceDataMeasureController.java
index 6d067bd..ee2ba0c 100644
--- a/dongjian-dashboard-back-controller/src/main/java/com/dongjian/dashboard/back/controller/DeviceDataMeasureController.java
+++ b/dongjian-dashboard-back-controller/src/main/java/com/dongjian/dashboard/back/controller/DeviceDataMeasureController.java
@@ -15,6 +15,7 @@ import com.dongjian.dashboard.back.easyexcel.ExportDeviceMeasureDataDTO;
 import com.dongjian.dashboard.back.easyexcel.LanguageDynamicHeaderAdapter;
 import com.dongjian.dashboard.back.service.DeviceDataMeasureService;
 import com.dongjian.dashboard.back.service.common.CommonOpt;
+import com.dongjian.dashboard.back.util.CommonUtil;
 import com.dongjian.dashboard.back.vo.data.DeviceMeasureData;
 import com.dongjian.dashboard.back.vo.device.LineData;
 import io.swagger.v3.oas.annotations.Operation;
@@ -93,7 +94,7 @@ public class DeviceDataMeasureController {
 
         response.setContentType("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet");
         response.setCharacterEncoding("utf-8");
-        String fileName = URLEncoder.encode("計測データ", StandardCharsets.UTF_8).replace("+", "%20");
+        String fileName = URLEncoder.encode("計測データ"+ CommonUtil.generateSuffix(), StandardCharsets.UTF_8).replace("+", "%20");
         response.setHeader("Content-disposition", "attachment;filename*=utf-8''" + fileName + ".xlsx");
 
         PageInfo<DeviceMeasureData> pageData = deviceDataMeasureService.getDataList(pageSearchParam, CompanyId, UserId, LanguageType);
diff --git a/dongjian-dashboard-back-util/src/main/java/com/dongjian/dashboard/back/util/CommonUtil.java b/dongjian-dashboard-back-util/src/main/java/com/dongjian/dashboard/back/util/CommonUtil.java
index 557eb2a..5ba116d 100644
--- a/dongjian-dashboard-back-util/src/main/java/com/dongjian/dashboard/back/util/CommonUtil.java
+++ b/dongjian-dashboard-back-util/src/main/java/com/dongjian/dashboard/back/util/CommonUtil.java
@@ -5,6 +5,9 @@ import java.math.BigDecimal;
 import java.math.RoundingMode;
 import java.text.ParseException;
 import java.text.SimpleDateFormat;
+import java.time.LocalDate;
+import java.time.ZoneId;
+import java.time.format.DateTimeFormatter;
 import java.util.*;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
@@ -874,4 +877,11 @@ public class CommonUtil {
 		BigDecimal result = numA.divide(numB, 2, RoundingMode.HALF_UP);
 		return result.multiply(new BigDecimal(100)).toPlainString() + "%";
     }
+
+	public static String generateSuffix() {
+		String date = LocalDate.now(ZoneId.of("Asia/Tokyo"))
+				.format(DateTimeFormatter.ofPattern("yyyyMMdd"));
+		long timestampSeconds = System.currentTimeMillis() / 1000;
+		return "_" + date + "_" + timestampSeconds;
+	}
 }