diff --git a/rc-service/rc-service-other/other-adapter/src/main/java/com/red/circle/other/adapter/app/task/RoomDailyTaskRestController.java b/rc-service/rc-service-other/other-adapter/src/main/java/com/red/circle/other/adapter/app/task/RoomDailyTaskRestController.java
index f6a9332b..963faf11 100644
--- a/rc-service/rc-service-other/other-adapter/src/main/java/com/red/circle/other/adapter/app/task/RoomDailyTaskRestController.java
+++ b/rc-service/rc-service-other/other-adapter/src/main/java/com/red/circle/other/adapter/app/task/RoomDailyTaskRestController.java
@@ -2,15 +2,14 @@ package com.red.circle.other.adapter.app.task;
 
 import com.red.circle.common.business.dto.cmd.AppExtCommand;
 import jakarta.validation.constraints.NotNull;
-import com.red.circle.other.app.dto.clientobject.task.RoomDailyTaskCO;
 import com.red.circle.other.app.dto.clientobject.task.RoomDailyTaskClaimCO;
+import com.red.circle.other.app.dto.clientobject.task.RoomDailyTaskListCO;
 import com.red.circle.other.app.dto.cmd.task.RoomDailyTaskClaimCmd;
 import com.red.circle.other.app.service.task.RoomDailyTaskService;
 import lombok.RequiredArgsConstructor;
 import org.springframework.validation.annotation.Validated;
 import org.springframework.web.bind.annotation.*;
 
-import java.util.List;
 
 /**
  * 每日任务接口
@@ -29,7 +28,7 @@ public class RoomDailyTaskRestController {
      * @eo.method get
      */
     @GetMapping("/list")
-    public List<RoomDailyTaskCO> getTaskList(AppExtCommand cmd,
+    public RoomDailyTaskListCO getTaskList(AppExtCommand cmd,
             @RequestParam @NotNull(message = "任务分类不能为空") Integer taskCategory) {
         return roomDailyTaskService.getTaskList(cmd.getReqUserId(), taskCategory);
     }
diff --git a/rc-service/rc-service-other/other-application/src/main/java/com/red/circle/other/app/command/task/RoomDailyTaskQueryExe.java b/rc-service/rc-service-other/other-application/src/main/java/com/red/circle/other/app/command/task/RoomDailyTaskQueryExe.java
index ef31ffc6..2912f92f 100644
--- a/rc-service/rc-service-other/other-application/src/main/java/com/red/circle/other/app/command/task/RoomDailyTaskQueryExe.java
+++ b/rc-service/rc-service-other/other-application/src/main/java/com/red/circle/other/app/command/task/RoomDailyTaskQueryExe.java
@@ -1,6 +1,7 @@
 package com.red.circle.other.app.command.task;
 
 import com.red.circle.other.app.dto.clientobject.task.RoomDailyTaskCO;
+import com.red.circle.other.app.dto.clientobject.task.RoomDailyTaskListCO;
 import com.red.circle.other.app.dto.clientobject.task.RoomDailyTaskTierCO;
 import com.red.circle.other.infra.database.rds.entity.task.RoomDailyTaskConfig;
 import com.red.circle.other.infra.database.rds.entity.task.RoomDailyTaskProgress;
@@ -12,6 +13,8 @@ import org.springframework.stereotype.Component;
 import org.springframework.util.CollectionUtils;
 
 import java.time.LocalDate;
+import java.time.ZonedDateTime;
+import java.time.temporal.ChronoUnit;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.Map;
@@ -26,10 +29,15 @@ public class RoomDailyTaskQueryExe {
 
     private final RoomDailyTaskDatabaseService taskDatabaseService;
 
-    public List<RoomDailyTaskCO> execute(Long userId, Integer taskCategory) {
+    public RoomDailyTaskListCO execute(Long userId, Integer taskCategory) {
         List<RoomDailyTaskConfig> configs = taskDatabaseService.listEnabledConfigs(taskCategory);
+
+        RoomDailyTaskListCO result = new RoomDailyTaskListCO();
+        result.setCountdownSeconds(calcCountdownSeconds());
+
         if (CollectionUtils.isEmpty(configs)) {
-            return new ArrayList<>();
+            result.setTasks(new ArrayList<>());
+            return result;
         }
 
         List<String> taskCodes = configs.stream().map(RoomDailyTaskConfig::getTaskCode).collect(Collectors.toList());
@@ -43,9 +51,19 @@ public class RoomDailyTaskQueryExe {
         Map<String, RoomDailyTaskProgress> progressMap = progressList.stream()
                 .collect(Collectors.toMap(RoomDailyTaskProgress::getTaskCode, p -> p, (a, b) -> a));
 
-        return configs.stream()
+        List<RoomDailyTaskCO> tasks = configs.stream()
                 .map(config -> buildTaskCO(config, tierMap.getOrDefault(config.getTaskCode(), new ArrayList<>()), progressMap.get(config.getTaskCode())))
                 .collect(Collectors.toList());
+
+        result.setTasks(tasks);
+        return result;
+    }
+
+    /** 计算距沙特时间今日午夜的剩余秒数 */
+    private long calcCountdownSeconds() {
+        ZonedDateTime now = ZonedDateTimeAsiaRiyadhUtils.now();
+        ZonedDateTime midnight = now.toLocalDate().plusDays(1).atStartOfDay(now.getZone());
+        return ChronoUnit.SECONDS.between(now, midnight);
     }
 
     private RoomDailyTaskCO buildTaskCO(RoomDailyTaskConfig config, List<RoomDailyTaskTier> tiers, RoomDailyTaskProgress progress) {
diff --git a/rc-service/rc-service-other/other-application/src/main/java/com/red/circle/other/app/service/task/RoomDailyTaskServiceImpl.java b/rc-service/rc-service-other/other-application/src/main/java/com/red/circle/other/app/service/task/RoomDailyTaskServiceImpl.java
index f67cf828..77baed37 100644
--- a/rc-service/rc-service-other/other-application/src/main/java/com/red/circle/other/app/service/task/RoomDailyTaskServiceImpl.java
+++ b/rc-service/rc-service-other/other-application/src/main/java/com/red/circle/other/app/service/task/RoomDailyTaskServiceImpl.java
@@ -2,14 +2,12 @@ package com.red.circle.other.app.service.task;
 
 import com.red.circle.other.app.command.task.RoomDailyTaskClaimExe;
 import com.red.circle.other.app.command.task.RoomDailyTaskQueryExe;
-import com.red.circle.other.app.dto.clientobject.task.RoomDailyTaskCO;
 import com.red.circle.other.app.dto.clientobject.task.RoomDailyTaskClaimCO;
+import com.red.circle.other.app.dto.clientobject.task.RoomDailyTaskListCO;
 import com.red.circle.other.app.dto.cmd.task.RoomDailyTaskClaimCmd;
 import lombok.RequiredArgsConstructor;
 import org.springframework.stereotype.Service;
 
-import java.util.List;
-
 @Service
 @RequiredArgsConstructor
 public class RoomDailyTaskServiceImpl implements RoomDailyTaskService {
@@ -18,7 +16,7 @@ public class RoomDailyTaskServiceImpl implements RoomDailyTaskService {
     private final RoomDailyTaskClaimExe claimExe;
 
     @Override
-    public List<RoomDailyTaskCO> getTaskList(Long userId, Integer taskCategory) {
+    public RoomDailyTaskListCO getTaskList(Long userId, Integer taskCategory) {
         return queryExe.execute(userId, taskCategory);
     }
 
diff --git a/rc-service/rc-service-other/other-client/src/main/java/com/red/circle/other/app/dto/clientobject/task/RoomDailyTaskListCO.java b/rc-service/rc-service-other/other-client/src/main/java/com/red/circle/other/app/dto/clientobject/task/RoomDailyTaskListCO.java
new file mode 100644
index 00000000..05b11e50
--- /dev/null
+++ b/rc-service/rc-service-other/other-client/src/main/java/com/red/circle/other/app/dto/clientobject/task/RoomDailyTaskListCO.java
@@ -0,0 +1,17 @@
+package com.red.circle.other.app.dto.clientobject.task;
+
+import lombok.Data;
+
+import java.util.List;
+
+/**
+ * 每日任务列表返回结构
+ */
+@Data
+public class RoomDailyTaskListCO {
+
+    /** 距当日结束的剩余秒数（沙特时间午夜重置） */
+    private Long countdownSeconds;
+
+    private List<RoomDailyTaskCO> tasks;
+}
diff --git a/rc-service/rc-service-other/other-client/src/main/java/com/red/circle/other/app/service/task/RoomDailyTaskService.java b/rc-service/rc-service-other/other-client/src/main/java/com/red/circle/other/app/service/task/RoomDailyTaskService.java
index 04928977..ff641fd4 100644
--- a/rc-service/rc-service-other/other-client/src/main/java/com/red/circle/other/app/service/task/RoomDailyTaskService.java
+++ b/rc-service/rc-service-other/other-client/src/main/java/com/red/circle/other/app/service/task/RoomDailyTaskService.java
@@ -1,14 +1,12 @@
 package com.red.circle.other.app.service.task;
 
-import com.red.circle.other.app.dto.clientobject.task.RoomDailyTaskCO;
 import com.red.circle.other.app.dto.clientobject.task.RoomDailyTaskClaimCO;
+import com.red.circle.other.app.dto.clientobject.task.RoomDailyTaskListCO;
 import com.red.circle.other.app.dto.cmd.task.RoomDailyTaskClaimCmd;
 
-import java.util.List;
-
 public interface RoomDailyTaskService {
 
-    List<RoomDailyTaskCO> getTaskList(Long userId, Integer taskCategory);
+    RoomDailyTaskListCO getTaskList(Long userId, Integer taskCategory);
 
     RoomDailyTaskClaimCO claimReward(RoomDailyTaskClaimCmd cmd);
 }