diff --git a/DatabaseConn.vba b/DatabaseConn.vba
new file mode 100644
index 0000000..8d5f81b
--- /dev/null
+++ b/DatabaseConn.vba
@@ -0,0 +1,37 @@
+'----关闭数据库连接,释放资源
+Public Sub closeConn()
+On Error Resume Next
+    If conn Is Nothing Then Exit Sub
+    conn.Close
+    Set conn = Nothing
+End Sub
+
+
+'----连接数据库,创建结果集对象
+Public Sub AutoRun()
+    Call closeConn
+    On Error Resume Next
+    Dim strDBinf As String
+    
+    Application.StatusBar = "正在连接数据库……"
+    
+    If conn Is Nothing Then
+        Set conn = New ADODB.Connection
+        Set RES = CreateObject("ADODB.Recordset")
+        
+        strDBinf = "DSN=mysqlinklexcel32"   '标准语句
+        Call conn.Open(strDBinf)
+        
+        If VBA.Err.Number <> 0 Then
+            strDBinf = "DSN=mysqlinklexcel64"   '标准语句
+            VBA.MsgBox "32位DSN连接失败,尝试使用mysqllinkexcel6连接!"
+            Call conn.Open(strDBinf)
+        End If
+       
+        If VBA.Err.Number > 1 Then
+            VBA.MsgBox "连接异常,请检查DB环境!"
+            Set conn = Nothing
+        End If
+        Application.StatusBar = "数据库连接成功"
+    End If
+End Sub
\ No newline at end of file
diff --git a/Public.vba b/Public.vba
new file mode 100644
index 0000000..bbef538
--- /dev/null
+++ b/Public.vba
@@ -0,0 +1,5 @@
+Public conn As ADODB.Connection  '-----定义数据库连接  Public 方便每个SUB使用 不需要重复定义
+Public RES As ADODB.Recordset    '-----定义结果集  结果集和二维表很类似
+Public Sign As String
+Dim row, col As Integer
+Dim Sql As String
\ No newline at end of file