diff --git a/Build_God_Api/Build_God_Api/DB/CharacterMissionProgress.cs b/Build_God_Api/Build_God_Api/DB/CharacterMissionProgress.cs
index 9b975bd..0d4ac18 100644
--- a/Build_God_Api/Build_God_Api/DB/CharacterMissionProgress.cs
+++ b/Build_God_Api/Build_God_Api/DB/CharacterMissionProgress.cs
@@ -12,6 +12,11 @@ namespace Build_God_Api.DB
         /// </summary>
         public int CharacterId { get; set; }
 
+        /// <summary>
+        /// 每日任务实例ID
+        /// </summary>
+        public int DailyMissionId { get; set; }
+
         /// <summary>
         /// 任务ID
         /// </summary>
diff --git a/Build_God_Api/Build_God_Api/Services/BattleService.cs b/Build_God_Api/Build_God_Api/Services/BattleService.cs
index 858a496..bd08dfe 100644
--- a/Build_God_Api/Build_God_Api/Services/BattleService.cs
+++ b/Build_God_Api/Build_God_Api/Services/BattleService.cs
@@ -213,8 +213,7 @@ namespace Build_God_Api.Services
                     if (progress.TargetItemId == monsterId)
                     {
                         var characterProgress = await _db.Queryable<CharacterMissionProgress>()
-                            .Where(cp => cp.CharacterId == characterId 
-                                && cp.MissionId == dailyMission.MissionId 
+                            .Where(cp => cp.DailyMissionId == dailyMission.Id
                                 && cp.MissionProgressId == progress.Id)
                             .FirstAsync();
 
@@ -223,6 +222,7 @@ namespace Build_God_Api.Services
                             characterProgress = new CharacterMissionProgress
                             {
                                 CharacterId = characterId,
+                                DailyMissionId = dailyMission.Id,
                                 MissionId = dailyMission.MissionId,
                                 MissionProgressId = progress.Id,
                                 CurrentCount = 1,
@@ -244,7 +244,7 @@ namespace Build_God_Api.Services
 
                 // 检查任务是否全部完成
                 var allProgresses = await _db.Queryable<CharacterMissionProgress>()
-                    .Where(cp => cp.CharacterId == characterId && cp.MissionId == dailyMission.MissionId)
+                    .Where(cp => cp.DailyMissionId == dailyMission.Id)
                     .ToListAsync();
 
                 var missionConfigProgresses = await _db.Queryable<MissionProgress>()
diff --git a/Build_God_Api/Build_God_Api/Services/DailyMissionService.cs b/Build_God_Api/Build_God_Api/Services/DailyMissionService.cs
index 6ad9733..08552c0 100644
--- a/Build_God_Api/Build_God_Api/Services/DailyMissionService.cs
+++ b/Build_God_Api/Build_God_Api/Services/DailyMissionService.cs
@@ -134,7 +134,7 @@ namespace Build_God_Api.Services
 
             var dailyMissions = await _db.Queryable<CharacterDailyMission>()
                 .Where(x => x.CharacterId == characterId)
-                .Where(x => x.AssignedDate == today || x.AssignedDate == yesterday)
+                .Where(x => x.AssignedDate == today)
                 .OrderByDescending(x => x.AssignedDate)
                 .OrderByDescending(x => x.IsFromYesterday)
                 .ToListAsync();
@@ -200,7 +200,7 @@ namespace Build_God_Api.Services
                     foreach (var progress in mission.Progresses)
                     {
                         var characterProgress = await _db.Queryable<CharacterMissionProgress>()
-                            .FirstAsync(x => x.CharacterId == characterId && x.MissionId == dm.MissionId && x.MissionProgressId == progress.Id);
+                            .FirstAsync(x => x.DailyMissionId == dm.Id && x.MissionProgressId == progress.Id);
 
                         dto.Progresses.Add(new MissionProgressDto
                         {
@@ -352,6 +352,7 @@ namespace Build_God_Api.Services
                 {
                     var missionConfig = await _db.Queryable<Mission>().FirstAsync(x => x.Id == mission.MissionId);
                     var missionName = missionConfig?.Title ?? "每日任务";
+                    await _db.Deleteable<CharacterMissionProgress>().Where(x => x.DailyMissionId == mission.Id).ExecuteCommandAsync();
                     await _db.Deleteable<CharacterDailyMission>().Where(x => x.Id == mission.Id).ExecuteCommandAsync();
                     
                     var expireMessage = $"【{missionName}】由于没有完成已自动过期，并已为您分配新的任务，请按时完成任务吧！";
diff --git a/Build_God_Api/Build_God_Api/Services/MissionProgressService.cs b/Build_God_Api/Build_God_Api/Services/MissionProgressService.cs
index c53d1ce..7d052ee 100644
--- a/Build_God_Api/Build_God_Api/Services/MissionProgressService.cs
+++ b/Build_God_Api/Build_God_Api/Services/MissionProgressService.cs
@@ -73,15 +73,27 @@ namespace Build_God_Api.Services
 
         public async Task<List<CharacterMissionProgress>> GetCharacterProgress(int characterId, int missionId)
         {
+            var dailyMission = await db.Queryable<CharacterDailyMission>()
+                .Where(x => x.CharacterId == characterId && x.MissionId == missionId && x.Status != DailyMissionStatus.Claimed)
+                .OrderBy(x => x.AssignedDate, OrderByType.Desc)
+                .OrderBy(x => x.Id, OrderByType.Desc)
+                .FirstAsync();
+
+            if (dailyMission == null)
+                return new List<CharacterMissionProgress>();
+
             return await db.Queryable<CharacterMissionProgress>()
-                .Where(x => x.CharacterId == characterId && x.MissionId == missionId)
+                .Where(x => x.DailyMissionId == dailyMission.Id)
                 .ToListAsync();
         }
 
         public async Task<bool> UpdateCharacterProgress(int characterId, int missionProgressId, int count)
         {
             var progress = await db.Queryable<CharacterMissionProgress>()
-                .FirstAsync(x => x.CharacterId == characterId && x.MissionProgressId == missionProgressId);
+                .Where(x => x.CharacterId == characterId && x.MissionProgressId == missionProgressId && x.DailyMissionId > 0)
+                .OrderBy(x => x.UpdatedOn, OrderByType.Desc)
+                .OrderBy(x => x.Id, OrderByType.Desc)
+                .FirstAsync();
 
             if (progress == null)
                 throw new Exception("角色进度不存在");
@@ -100,9 +112,18 @@ namespace Build_God_Api.Services
 
         public async Task<bool> InitCharacterProgress(int characterId, int missionId)
         {
+            var dailyMission = await db.Queryable<CharacterDailyMission>()
+                .Where(x => x.CharacterId == characterId && x.MissionId == missionId && x.Status != DailyMissionStatus.Claimed)
+                .OrderBy(x => x.AssignedDate, OrderByType.Desc)
+                .OrderBy(x => x.Id, OrderByType.Desc)
+                .FirstAsync();
+
+            if (dailyMission == null)
+                return true;
+
             // 检查是否已经初始化过
             var existing = await db.Queryable<CharacterMissionProgress>()
-                .AnyAsync(x => x.CharacterId == characterId && x.MissionId == missionId);
+                .AnyAsync(x => x.DailyMissionId == dailyMission.Id);
 
             if (existing)
                 return true;
@@ -118,6 +139,7 @@ namespace Build_God_Api.Services
                 var characterProgress = new CharacterMissionProgress
                 {
                     CharacterId = characterId,
+                    DailyMissionId = dailyMission.Id,
                     MissionId = missionId,
                     MissionProgressId = progress.Id,
                     CurrentCount = 0,
@@ -163,8 +185,7 @@ namespace Build_God_Api.Services
                 // 获取角色进度
                 var characterProgress = await db.Queryable<CharacterMissionProgress>()
                     .FirstAsync(x =>
-                        x.CharacterId == characterId &&
-                        x.MissionId == dailyMission.MissionId &&
+                        x.DailyMissionId == dailyMission.Id &&
                         x.MissionProgressId == matchingProgress.Id);
 
                 if (characterProgress == null)
@@ -172,6 +193,7 @@ namespace Build_God_Api.Services
                     characterProgress = new CharacterMissionProgress
                     {
                         CharacterId = characterId,
+                        DailyMissionId = dailyMission.Id,
                         MissionId = dailyMission.MissionId,
                         MissionProgressId = matchingProgress.Id,
                         CurrentCount = 0,
@@ -193,10 +215,11 @@ namespace Build_God_Api.Services
 
                 // 检查任务是否全部完成
                 var allProgresses = await db.Queryable<CharacterMissionProgress>()
-                    .Where(x => x.CharacterId == characterId && x.MissionId == dailyMission.MissionId)
+                    .Where(x => x.DailyMissionId == dailyMission.Id)
                     .ToListAsync();
 
-                bool allCompleted = allProgresses.All(p => p.IsCompleted);
+                bool allCompleted = mission.Progresses.All(p =>
+                    allProgresses.Any(cp => cp.MissionProgressId == p.Id && cp.IsCompleted));
 
                 if (allCompleted)
                 {