diff --git a/IRaCIS.Core.Application/Service/Document/DTO/SystemDocumentViewModel.cs b/IRaCIS.Core.Application/Service/Document/DTO/SystemDocumentViewModel.cs
index 43973f565..99d2470ad 100644
--- a/IRaCIS.Core.Application/Service/Document/DTO/SystemDocumentViewModel.cs
+++ b/IRaCIS.Core.Application/Service/Document/DTO/SystemDocumentViewModel.cs
@@ -119,8 +119,7 @@ namespace IRaCIS.Core.Application.Contracts
 
     public class GetNextUnSignDocumentInDto
     {
-        [NotDefault]
-        public Guid TrialId { get; set; }
+        public Guid? TrialId { get; set; }
 
         public bool Asc { get; set; } = true;
         public string SortField { get; set; } = "";
diff --git a/IRaCIS.Core.Application/Service/Document/Interface/ISystemDocumentService.cs b/IRaCIS.Core.Application/Service/Document/Interface/ISystemDocumentService.cs
index dfbf08ea5..8f61c2dec 100644
--- a/IRaCIS.Core.Application/Service/Document/Interface/ISystemDocumentService.cs
+++ b/IRaCIS.Core.Application/Service/Document/Interface/ISystemDocumentService.cs
@@ -25,7 +25,10 @@ namespace IRaCIS.Core.Application.Contracts
 
         Task<IResponseOutput> DeleteSystemDocumentAsync(Guid systemDocumentId);
 
+        Task<PageOutput<UnionDocumentWithConfirmInfoView>> getWaitSignSysDocList(SystemDocumentQuery querySystemDocument);
 
 
-    }
+
+
+	}
 }
diff --git a/IRaCIS.Core.Application/Service/Document/SystemDocumentService.cs b/IRaCIS.Core.Application/Service/Document/SystemDocumentService.cs
index e90b73416..abde4fd01 100644
--- a/IRaCIS.Core.Application/Service/Document/SystemDocumentService.cs
+++ b/IRaCIS.Core.Application/Service/Document/SystemDocumentService.cs
@@ -23,6 +23,7 @@ namespace IRaCIS.Core.Application.Services
         private readonly IRepository<SystemDocConfirmedUser> _systemDocConfirmedUserRepository;
 
         public SystemDocumentService( IRepository<SystemDocument> systemDocumentRepository,
+
             IRepository<SystemDocNeedConfirmedUserType> systemDocNeedConfirmedUserTypeRepository,
             IRepository<SystemDocConfirmedUser> systemDocConfirmedUserRepository)
         {
diff --git a/IRaCIS.Core.Application/Service/Document/TrialDocumentService.cs b/IRaCIS.Core.Application/Service/Document/TrialDocumentService.cs
index b41b3d1b5..9da81b37c 100644
--- a/IRaCIS.Core.Application/Service/Document/TrialDocumentService.cs
+++ b/IRaCIS.Core.Application/Service/Document/TrialDocumentService.cs
@@ -25,7 +25,8 @@ namespace IRaCIS.Core.Application.Services
         private readonly IRepository<TrialDocument> _trialDocumentRepository;
         private readonly IRepository<TrialDocConfirmedUser> _trialDocUserTypeConfirmedUserRepository;
         private readonly IRepository<Trial> _trialRepository;
-        private readonly IRepository<SystemDocConfirmedUser> _systemDocConfirmedUserRepository;
+		private readonly ISystemDocumentService _systemDocumentService;
+		private readonly IRepository<SystemDocConfirmedUser> _systemDocConfirmedUserRepository;
         private readonly IRepository<SystemDocument> _systemDocumentRepository;
         private readonly IRepository<TrialCriterionAdditionalAssessmentType> _trialCriterionAdditionalAssessmentTypeRepository;
         private readonly IRepository<ReadingQuestionCriterionTrial> _readingQuestionCriterionTrialRepository;
@@ -34,7 +35,8 @@ namespace IRaCIS.Core.Application.Services
         public TrialDocumentService(IRepository<TrialDocument> trialDocumentRepository,
              IRepository<TrialDocConfirmedUser> trialDocUserTypeConfirmedUserRepository,
                   IRepository<Trial> trialRepository,
-            IRepository<SystemDocConfirmedUser> systemDocConfirmedUserRepository,
+				  ISystemDocumentService systemDocumentService,
+			IRepository<SystemDocConfirmedUser> systemDocConfirmedUserRepository,
              IRepository<TrialCriterionAdditionalAssessmentType> trialCriterionAdditionalAssessmentTypeRepository,
             IRepository<ReadingQuestionCriterionTrial> readingQuestionCriterionTrialRepository
             , IRepository<SystemDocument> systemDocumentRepository)
@@ -42,7 +44,8 @@ namespace IRaCIS.Core.Application.Services
             _trialDocumentRepository = trialDocumentRepository;
             this._trialDocUserTypeConfirmedUserRepository = trialDocUserTypeConfirmedUserRepository;
             this._trialRepository = trialRepository;
-            this._systemDocConfirmedUserRepository = systemDocConfirmedUserRepository;
+			this._systemDocumentService = systemDocumentService;
+			this._systemDocConfirmedUserRepository = systemDocConfirmedUserRepository;
             _systemDocumentRepository = systemDocumentRepository;
             _readingQuestionCriterionTrialRepository = readingQuestionCriterionTrialRepository;
             _trialCriterionAdditionalAssessmentTypeRepository = trialCriterionAdditionalAssessmentTypeRepository;
@@ -123,19 +126,37 @@ namespace IRaCIS.Core.Application.Services
         [HttpPost]
         public async Task<UnionDocumentWithConfirmInfoView?> GetNextUnSignDocument(GetNextUnSignDocumentInDto inDto)
         {
-            var result = await this.GetUserDocumentList(new TrialUserDocUnionQuery()
-            {
-                Asc = inDto.Asc,
-                IsSign = false,
-                SortField = inDto.SortField,
-                TrialId = inDto.TrialId,
-                PageIndex = 1,
-                PageSize = 1,
-            });
+            var result = new PageOutput<UnionDocumentWithConfirmInfoView>() { };
 
-            if (result.Data.CurrentPageData.Count > 0)
+            if (inDto.TrialId != null)
             {
-                return result.Data.CurrentPageData.First();
+                result = (await this.GetUserDocumentList(new TrialUserDocUnionQuery()
+                {
+                    Asc = inDto.Asc,
+                    IsSign = false,
+                    SortField = inDto.SortField,
+                    TrialId = inDto.TrialId,
+                    PageIndex = 1,
+                    PageSize = 1,
+                })).Data;
+            }
+            else 
+            {
+                result = await _systemDocumentService.getWaitSignSysDocList(new SystemDocumentQuery()
+                {
+                    PageIndex=1,
+                    IsSigned = false,
+                    PageSize=1,
+                    Asc=false,
+					SortField="UpdateTime",
+				});
+
+			}
+			
+
+            if (result.CurrentPageData.Count > 0)
+            {
+                return result.CurrentPageData.First();
             }
             else
             {