diff --git a/Common/Common-Unity/Common-Unity.csproj b/Common/Common-Unity/Common-Unity.csproj
index 4bb9263..9ab3475 100644
--- a/Common/Common-Unity/Common-Unity.csproj
+++ b/Common/Common-Unity/Common-Unity.csproj
@@ -30,6 +30,9 @@
     <Compile Include="..\Common\Json\LCJsonConverter.cs">
       <Link>Json\LCJsonConverter.cs</Link>
     </Compile>
+    <Compile Include="..\Common\Exception\LCException.cs">
+      <Link>Exception\LCException.cs</Link>
+    </Compile>
   </ItemGroup>
   <ItemGroup>
     <Reference Include="Newtonsoft.Json">
diff --git a/Common/Common/Common.csproj b/Common/Common/Common.csproj
index 8157b01..669c947 100644
--- a/Common/Common/Common.csproj
+++ b/Common/Common/Common.csproj
@@ -13,5 +13,6 @@
     <Folder Include="Log\" />
     <Folder Include="Http\" />
     <Folder Include="Task\" />
+    <Folder Include="Exception\" />
   </ItemGroup>
 </Project>
diff --git a/Storage/Storage/LCException.cs b/Common/Common/Exception/LCException.cs
similarity index 50%
rename from Storage/Storage/LCException.cs
rename to Common/Common/Exception/LCException.cs
index acf2249..1daebab 100644
--- a/Storage/Storage/LCException.cs
+++ b/Common/Common/Exception/LCException.cs
@@ -1,11 +1,20 @@
 using System;
 
-namespace LeanCloud.Storage {
+namespace LeanCloud {
+    /// <summary>
+    /// LeanCloud 异常
+    /// </summary>
     public class LCException : Exception {
+        /// <summary>
+        /// 错误码
+        /// </summary>
         public int Code {
             get; set;
         }
 
+        /// <summary>
+        /// 错误信息
+        /// </summary>
         public new string Message {
             get; set;
         }
@@ -14,5 +23,9 @@ namespace LeanCloud.Storage {
             Code = code;
             Message = message;
         }
+
+        public override string ToString() {
+            return $"{Code} - {Message}";
+        }
     }
 }
diff --git a/Storage/Storage-Unity/Storage-Unity.csproj b/Storage/Storage-Unity/Storage-Unity.csproj
index 7ea411a..42d8e68 100644
--- a/Storage/Storage-Unity/Storage-Unity.csproj
+++ b/Storage/Storage-Unity/Storage-Unity.csproj
@@ -15,9 +15,6 @@
     <Compile Include="..\Storage\LCCloud.cs">
       <Link>LCCloud.cs</Link>
     </Compile>
-    <Compile Include="..\Storage\LCException.cs">
-      <Link>LCException.cs</Link>
-    </Compile>
     <Compile Include="..\Storage\LCFile.cs">
       <Link>LCFile.cs</Link>
     </Compile>
diff --git a/Storage/Storage.Test/ExceptionTest.cs b/Storage/Storage.Test/ExceptionTest.cs
index 83f70b3..bcd80c0 100644
--- a/Storage/Storage.Test/ExceptionTest.cs
+++ b/Storage/Storage.Test/ExceptionTest.cs
@@ -1,5 +1,5 @@
 using NUnit.Framework;
-using LeanCloud.Storage;
+using LeanCloud;
 
 namespace Storage.Test {
     public class ExceptionTest {