diff --git a/Falcon.SugarApi/DatabaseManager/DatabaseDIFailException.cs b/Falcon.SugarApi/DatabaseManager/DatabaseDIFailException.cs
new file mode 100644
index 0000000..d11c803
--- /dev/null
+++ b/Falcon.SugarApi/DatabaseManager/DatabaseDIFailException.cs
@@ -0,0 +1,16 @@
+using System;
+
+namespace Falcon.SugarApi.DatabaseManager
+{
+    /// <summary>
+    /// 数据库注入失败异常
+    /// </summary>
+    public class DatabaseDIFailException<T> :Exception
+        where T: DbContextBase {
+        /// <summary>
+        /// 数据库注入失败
+        /// </summary>
+        public DatabaseDIFailException():base($"数据库{nameof(T)}注入失败！无法获取数据库实例！") { }
+
+    }
+}