diff --git a/src/Shentun.Peis.Domain/LisRequests/LisRequestManager.cs b/src/Shentun.Peis.Domain/LisRequests/LisRequestManager.cs
index 0291636..372a29d 100644
--- a/src/Shentun.Peis.Domain/LisRequests/LisRequestManager.cs
+++ b/src/Shentun.Peis.Domain/LisRequests/LisRequestManager.cs
@@ -410,7 +410,7 @@ namespace Shentun.Peis.LisRequests
 
 
             string maxnum = "1";
-            string date = DateTime.Now.ToString("yyyyMMdd");// 当天
+            string date = DateTime.Now.ToString("yyMMdd");// 当天
 
             if (lis_request_no_rule_coding == "0")
             {
diff --git a/src/Shentun.Peis.Domain/PatientRegisters/PatientRegisterManager.cs b/src/Shentun.Peis.Domain/PatientRegisters/PatientRegisterManager.cs
index 6a80445..18c152f 100644
--- a/src/Shentun.Peis.Domain/PatientRegisters/PatientRegisterManager.cs
+++ b/src/Shentun.Peis.Domain/PatientRegisters/PatientRegisterManager.cs
@@ -801,7 +801,7 @@ namespace Shentun.Peis.PatientRegisters
 
 
             string maxnum = "1";
-            string date = DateTime.Now.ToString("yyyyMMdd");// 当天
+            string date = DateTime.Now.ToString("yyMMdd");// 当天
 
             if (patient_register_no_rule_coding == "0")
             {
diff --git a/src/Shentun.Peis.Domain/RegisterChecks/RegisterCheckManager.cs b/src/Shentun.Peis.Domain/RegisterChecks/RegisterCheckManager.cs
index 5a8b122..785bf7a 100644
--- a/src/Shentun.Peis.Domain/RegisterChecks/RegisterCheckManager.cs
+++ b/src/Shentun.Peis.Domain/RegisterChecks/RegisterCheckManager.cs
@@ -476,7 +476,7 @@ namespace Shentun.Peis.RegisterChecks
 
 
             string maxnum = "1";
-            string date = DateTime.Now.ToString("yyyyMMdd");// 当天
+            string date = DateTime.Now.ToString("yyMMdd");// 当天
 
             if (check_request_no_rule_coding == "0")
             {