diff --git a/CNAS_DBSync/frmSyncParams.cs b/CNAS_DBSync/frmSyncParams.cs
index a632ee8..fa28eb3 100644
--- a/CNAS_DBSync/frmSyncParams.cs
+++ b/CNAS_DBSync/frmSyncParams.cs
@@ -266,9 +266,12 @@ namespace CNAS_DBSync
 
                 if (currentSyncItem.SyncInstrumentDSInfo != null && currentSyncItem.SyncInstrumentDSInfo.InstrumentDataSourceType != DataSourceType.None)
                 {
-                    dgvMapping.DataSource = new BindingList<SyncParamasInfo>(currentSyncItem.LstSyncPramas);
+
+                    if (currentSyncItem.LstSyncPramas != null)
+                        dgvMapping.DataSource = new BindingList<SyncParamasInfo>(currentSyncItem.LstSyncPramas);
                     if (currentSyncItem.SyncInstrumentDSInfo.ServerName != "")
                         btnLoadDBData_Click(sender, e);
+
                 }
                 else
                 {
@@ -288,13 +291,17 @@ namespace CNAS_DBSync
         private void cbxInstrument_SelectedIndexChanged(object sender, EventArgs e)
         {
             if (cbxInstrument.Text == null) return;
+            string strInstrumentCode = this.dgvInstrument.Rows[this.dgvInstrument.CurrentRow.Index].Cells[0].Value.ToString();
+
+            // 使用LINQ查找匹配的数据
+            SyncInstrumentItemInfo matchedInstrument = lstSyncInstrument.FirstOrDefault(x => x.Code == strInstrumentCode);
 
             InstrumentData instrumentData = InstrumentDataFact.CreateInstrumentDataSource(currentSyncItem.SyncInstrumentDSInfo, new object[] { "", "", "" });
 
             DataTable dtTableType = null;
             string strTableName_Instru = cbxInstrument.Text.ToString();
-
-            switch (currentSyncItem.SyncInstrumentDSInfo.InstrumentDataSourceType)
+            
+            switch (matchedInstrument.SyncInstrumentDSInfo.InstrumentDataSourceType)
             {
                 case DataSourceType.MySQL:
                     dtTableType = SelectTableType.MySqlsec(strTableName_Instru);
@@ -315,6 +322,7 @@ namespace CNAS_DBSync
                     dtTableType = SelectTableType.KingSql(strTableName_Instru);
                     break;
                 default:
+                    strTableName_Instru= matchedInstrument.SyncInstrumentDSInfo.InstrumentDataSourceType.ToString();
                     if (dictInstruTables.ContainsKey(strTableName_Instru))
                     {
                         dtTableType = dictInstruTables[strTableName_Instru];
@@ -657,7 +665,7 @@ namespace CNAS_DBSync
             SqlServerFormat = FileOperation.GetFormatConfigData<SqlServerFormatConfig>("SqlServerFormatConfig.xml");
             OracleFormat = FileOperation.GetFormatConfigData<OracleFormatConfig>("OracleFormatConfig.xml");
             NormalFileFormat = FileOperation.GetFormatConfigData<NormalFileFormatConfig>("NormalFileFormatConfig.xml");
-            
+
             switch (currentSyncItem.SyncInstrumentDSInfo.InstrumentDataSourceType)
             {
                 case DataSourceType.MySQL:
@@ -729,9 +737,9 @@ namespace CNAS_DBSync
                     dataTableStruct = SelectTableType.SqlserversecSD(sql, currentSyncItem);
                     break;
                 case DataSourceType.Kingbase:
-                    if(cbxInstrument.Text.Contains('.'))
+                    if (cbxInstrument.Text.Contains('.'))
                         cbxInstrument.Text = cbxInstrument.Text.Split('.')[1];
-                    
+
                     dataTableStruct = SelectTableType.KingSql(sql);
                     break;
                 default: