diff --git a/source/attributeTableModel.cpp b/source/attributeTableModel.cpp
index db906ae..a43c31e 100644
--- a/source/attributeTableModel.cpp
+++ b/source/attributeTableModel.cpp
@@ -176,13 +176,16 @@ int AttributeTableModel::rowCount(const QModelIndex& parent) const
     return m_currentPageData.count();
 }
 
-int AttributeTableModel::columnCount(const QModelIndex &) const
+int AttributeTableModel::columnCount(const QModelIndex& parent) const
 {
     return m_displayField.isEmpty() ? 0 : m_displayField.count() + 1;
 }
 
 Qt::ItemFlags AttributeTableModel::flags(const QModelIndex &index) const
 {
+    if(!index.isValid())
+        return Qt::NoItemFlags;
+
     Qt::ItemFlags flags = QAbstractTableModel::flags(index);
     QModelIndex numberIndex = createIndex(index.row(), 0);
     QString text = numberIndex.data(Qt::DisplayRole).toString();
diff --git a/source/dbManager.cpp b/source/dbManager.cpp
index 3b0ca9c..1ad533b 100644
--- a/source/dbManager.cpp
+++ b/source/dbManager.cpp
@@ -97,7 +97,7 @@ bool DatabaseManager::connect(const QString& strConnectionName)
                         QString::fromWCharArray(L"没有找到该链接的配置信息"),
                         QSqlError::ConnectionError);
         emit errorOccurred(strConnectionName, error.databaseText());
-        LOG_ERROR("DB", QString("Connection failed: %1 due 2%").arg(strConnectionName).arg("no configuration information"));
+        LOG_ERROR("DB", QString("Connection failed: %1 due to 2%").arg(strConnectionName, "no configuration information"));
         return false;
     }
 
@@ -113,10 +113,10 @@ bool DatabaseManager::connect(const QString& strConnectionName)
     if(!db.open())
     {
         QString errorText = db.lastError().databaseText();
+        // QString transText = QString::fromUtf8(errorText.toLocal8Bit().constData());
+        // qDebug() << transText;
         LOG_ERROR("DB", QString("DB: %1 open failed. connectionName: %2. error: %3")
-                            .arg(config.strDBName)
-                            .arg(strConnectionName)
-                            .arg(errorText/*QString::fromUtf8(errorText.toUtf8())*/));
+                            .arg(config.strDBName, strConnectionName, errorText));
         emit errorOccurred(strConnectionName, QString::fromWCharArray(L"数据库打开失败，详情可见日志文件"));
         db.close();
         db = QSqlDatabase();//重置为无效数据库对象，在下面remove的时候就不会出现"connection '***' is still in use, all queries will cease to work"的警告
diff --git a/source/modelInfoEditDialog.cpp b/source/modelInfoEditDialog.cpp
index 1f12e2e..be3c442 100644
--- a/source/modelInfoEditDialog.cpp
+++ b/source/modelInfoEditDialog.cpp
@@ -113,8 +113,9 @@ void ModelInfoEditDialog::initialize()
     m_curModelID = -1;
     ui->btnAddGroup->setVisible(false);
     m_pMaskLayer = new MaskLayer(this);
-    //正则表达式，只能输入字母
-    QRegularExpression regExp("[A-Za-z0-9_]+");
+    //正则表达式，只能输入字母，且第一个字符不能是数字
+    //QRegularExpression regExp("[A-Za-z0-9_]+");
+    QRegularExpression regExp("^[A-Za-z_][A-Za-z0-9_]*$");
     QRegularExpressionValidator* validator = new QRegularExpressionValidator(regExp, this);
     ui->lineEdit_modelType->setValidator(validator);
 
diff --git a/ui/modelInfoEditDialog.ui b/ui/modelInfoEditDialog.ui
index 5ce4528..face588 100644
--- a/ui/modelInfoEditDialog.ui
+++ b/ui/modelInfoEditDialog.ui
@@ -311,11 +311,14 @@ QPushButton:pressed
               <height>0</height>
              </size>
             </property>
+            <property name="toolTip">
+             <string>*类别必须为英文，且首字符不能为数字</string>
+            </property>
             <property name="styleSheet">
              <string notr="true">color: rgb(255, 0, 0);</string>
             </property>
             <property name="text">
-             <string>*类别必须为英文</string>
+             <string>*类别必须为英文...</string>
             </property>
             <property name="alignment">
              <set>Qt::AlignmentFlag::AlignCenter</set>