diff --git a/QYMessageCenter.Business/MessageBusiness.cs b/QYMessageCenter.Business/MessageBusiness.cs
index 561855c..d7ebe9e 100644
--- a/QYMessageCenter.Business/MessageBusiness.cs
+++ b/QYMessageCenter.Business/MessageBusiness.cs
@@ -1,4 +1,5 @@
 using BBWYB.Server.Business;
+using Microsoft.Extensions.Caching.Memory;
 using Newtonsoft.Json;
 using QYMessageCenter.Common.Extensions;
 using QYMessageCenter.Common.Http;
@@ -13,10 +14,13 @@ namespace QYMessageCenter.Business
     public class MessageBusiness : BaseBusiness, IDenpendency
     {
         private readonly string Key = "BC-8cf10d7731c8417bae1c437818b7f8b3";
+        private IMemoryCache memoryCache;
+        private TimeSpan msgCacheTimeSpan;
 
-        public MessageBusiness(IFreeSql fsql, NLogManager nLogManager, IIdGenerator idGenerator, RestApiService restApiService) : base(fsql, nLogManager, idGenerator, restApiService)
+        public MessageBusiness(IFreeSql fsql, NLogManager nLogManager, IIdGenerator idGenerator, RestApiService restApiService, IMemoryCache memoryCache) : base(fsql, nLogManager, idGenerator, restApiService)
         {
-
+            this.memoryCache = memoryCache;
+            this.msgCacheTimeSpan = new TimeSpan(12, 0, 0);
         }
 
         /// <summary>
@@ -25,10 +29,17 @@ namespace QYMessageCenter.Business
         /// <param name="request"></param>
         public void Send(SendMessageRequest request)
         {
+            #region 检查消息md5
+            var md5 = $"{request.AppCode}_{request.TeamId}_{request.CustomTypeCode}_{request.Content}".Md5Encrypt();
+            if (memoryCache.TryGetValue(md5, out _))
+                return;
+            #endregion
+
             var msg = request.Map<QYNotification>();
             msg.Id = idGenerator.NewLong();
             msg.CreateTime = DateTime.Now;
 
+
             #region 调用goeasy
             var goeasy_httpResult = restApiService.SendRequest("https://rest-hz.goeasy.io/", "v2/pubsub/publish", new
             {
@@ -44,6 +55,10 @@ namespace QYMessageCenter.Business
             #region 保存入库
 
             #endregion
+
+            #region 缓存消息
+            memoryCache.Set(md5, msg, msgCacheTimeSpan);
+            #endregion
         }
     }
 }
diff --git a/QYMessageCenter.Business/QYMessageCenter.Business.csproj b/QYMessageCenter.Business/QYMessageCenter.Business.csproj
index 98a83de..33d8162 100644
--- a/QYMessageCenter.Business/QYMessageCenter.Business.csproj
+++ b/QYMessageCenter.Business/QYMessageCenter.Business.csproj
@@ -10,6 +10,7 @@
   <ItemGroup>
     <PackageReference Include="FreeSql" Version="3.2.812" />
     <PackageReference Include="FreeSql.Provider.MySql" Version="3.2.812" />
+    <PackageReference Include="Microsoft.Extensions.Caching.Memory" Version="8.0.0" />
     <PackageReference Include="Yitter.IdGenerator" Version="1.0.14" />
   </ItemGroup>