diff --git a/SGGL/BLL/Common/Funs.cs b/SGGL/BLL/Common/Funs.cs
index c5ef078b..5ae3b85e 100644
--- a/SGGL/BLL/Common/Funs.cs
+++ b/SGGL/BLL/Common/Funs.cs
@@ -5,6 +5,7 @@ namespace BLL
     using Quartz;
     using RestSharp;
     using System;
+    using System.Collections.Concurrent;
     using System.Collections.Generic;
     using System.Data;
     using System.Globalization;
@@ -22,13 +23,13 @@ namespace BLL
         /// <summary>
         /// 维护一个DB集合
         /// </summary>
-        private static Dictionary<int, Model.SGGLDB> dataBaseLinkList = new System.Collections.Generic.Dictionary<int, Model.SGGLDB>();
+        private static ConcurrentDictionary<int, Model.SGGLDB> dataBaseLinkList = new  ConcurrentDictionary<int, Model.SGGLDB>();
 
 
         /// <summary>
         /// 维护一个DB集合
         /// </summary>
-        public static System.Collections.Generic.Dictionary<int, Model.SGGLDB> DBList
+        public static ConcurrentDictionary<int, Model.SGGLDB> DBList
         {
             get
             {
@@ -40,7 +41,7 @@ namespace BLL
             get;
             set;
         }
-        public static Dictionary<string, string> WebEditList = new Dictionary<string, string>();
+        public static ConcurrentDictionary<string, string> WebEditList = new ConcurrentDictionary<string, string>();
 
         /// <summary>
         /// 数据库连接字符串
@@ -158,7 +159,7 @@ namespace BLL
         //    }
         //}
 
-        private static object locker = new object();
+        //private static object locker = new object();
 
         /// <summary>
         /// 数据库上下文。
@@ -167,13 +168,13 @@ namespace BLL
         {
             get
             {
-                lock (locker)
+               // lock (locker)
                 {
                     try
                     {
                         if (!DBList.ContainsKey(System.Threading.Thread.CurrentThread.ManagedThreadId))
                         {
-                            DBList.Add(System.Threading.Thread.CurrentThread.ManagedThreadId, new SGGLDB(connString));
+                            DBList.TryAdd(System.Threading.Thread.CurrentThread.ManagedThreadId, new SGGLDB(connString));
                         }
 
                         // DBList[System.Threading.Thread.CurrentThread.ManagedThreadId].CommandTimeout = 1200;
@@ -188,7 +189,7 @@ namespace BLL
                         }
                         else
                         {
-                            DBList.Add(System.Threading.Thread.CurrentThread.ManagedThreadId, db);
+                            DBList.TryAdd(System.Threading.Thread.CurrentThread.ManagedThreadId, db);
                         }
                         return db;
                     }
diff --git a/SGGL/BLL/ZHGL/RealName/RealNameMonitorService.cs b/SGGL/BLL/ZHGL/RealName/RealNameMonitorService.cs
index e0ab03e7..ed7221ed 100644
--- a/SGGL/BLL/ZHGL/RealName/RealNameMonitorService.cs
+++ b/SGGL/BLL/ZHGL/RealName/RealNameMonitorService.cs
@@ -235,7 +235,12 @@ namespace BLL
             {
                 if (BLL.Funs.DBList.ContainsKey(System.Threading.Thread.CurrentThread.ManagedThreadId))
                 {
-                    BLL.Funs.DBList.Remove(System.Threading.Thread.CurrentThread.ManagedThreadId);
+                    Model.SGGLDB db;
+                    BLL.Funs.DBList.TryRemove(System.Threading.Thread.CurrentThread.ManagedThreadId,out db);
+                    if (db != null)
+                    {
+                        db.Dispose();
+                    }
                 }
             }
         }
diff --git a/SGGL/FineUIPro.Web/common/PageBase.cs b/SGGL/FineUIPro.Web/common/PageBase.cs
index b05f75d5..dcc27aa7 100644
--- a/SGGL/FineUIPro.Web/common/PageBase.cs
+++ b/SGGL/FineUIPro.Web/common/PageBase.cs
@@ -330,7 +330,12 @@ namespace FineUIPro.Web
         {
             if (BLL.Funs.DBList.ContainsKey(System.Threading.Thread.CurrentThread.ManagedThreadId))
             {
-                BLL.Funs.DBList.Remove(System.Threading.Thread.CurrentThread.ManagedThreadId);
+                Model.SGGLDB db  ;
+                BLL.Funs.DBList.TryRemove(System.Threading.Thread.CurrentThread.ManagedThreadId,out db);
+                if (db != null)
+                {
+                    db.Dispose();
+                }
             }
 
             if (BLL.SQLHelper.GetConn().State == ConnectionState.Open)
diff --git a/SGGL/WebAPI/Filter/TestPermissionAttribute.cs b/SGGL/WebAPI/Filter/TestPermissionAttribute.cs
index 3647a3cc..ab7799bb 100644
--- a/SGGL/WebAPI/Filter/TestPermissionAttribute.cs
+++ b/SGGL/WebAPI/Filter/TestPermissionAttribute.cs
@@ -138,13 +138,19 @@ namespace WebAPI.Filter
             }
             if (!isOk)
             {
-                if (BLL.Funs.DBList.ContainsKey(System.Threading.Thread.CurrentThread.ManagedThreadId))
-                {
-                    BLL.Funs.DBList.Remove(System.Threading.Thread.CurrentThread.ManagedThreadId);
-                }
+                
 
                 base.OnActionExecuted(actionExecutedContext);
             }
+            if (BLL.Funs.DBList.ContainsKey(System.Threading.Thread.CurrentThread.ManagedThreadId))
+            {
+                Model.SGGLDB db;
+                BLL.Funs.DBList.TryRemove(System.Threading.Thread.CurrentThread.ManagedThreadId, out db);
+                if (db != null)
+                {
+                    db.Dispose();
+                }
+            }
         }
 
         /// <summary>