diff --git a/internal/dms/pkg/constant/const.go b/internal/dms/pkg/constant/const.go
index 73ed4d0a..20c42807 100644
--- a/internal/dms/pkg/constant/const.go
+++ b/internal/dms/pkg/constant/const.go
@@ -280,6 +280,13 @@ var supportedDataExportDBTypes = map[DBType]struct{}{
 	DBTypeOceanBaseMySQL: {},
 	DBTypeHive:           {},
 	DBTypeDM:             {},
+	// 新增数据源 (Issue #593)
+	DBTypeTiDB:           {},
+	DBTypeTDSQLForInnoDB: {},
+	DBTypeGoldenDB:       {},
+	DBTypeTBase:          {},
+	DBTypeGaussDB:        {},
+	DBTypeDB2:            {},
 }
 
 func CheckDBTypeIfDataExportSupported(dbtype string) bool {
diff --git a/internal/dms/pkg/constant/const_test.go b/internal/dms/pkg/constant/const_test.go
new file mode 100644
index 00000000..db4062f4
--- /dev/null
+++ b/internal/dms/pkg/constant/const_test.go
@@ -0,0 +1,64 @@
+package constant
+
+import (
+	"testing"
+)
+
+func TestCheckDBTypeIfDataExportSupported_NewTypes(t *testing.T) {
+	// 验证新增的数据源应在白名单中
+	newTypes := map[string]bool{
+		"TiDB":              true,
+		"TDSQL For InnoDB":  true,
+		"GoldenDB":          true,
+		"TBase":             true,
+		"GaussDB for MySQL": true, // GaussDB/openGauss: ParseDBType 的输入值是 "GaussDB for MySQL"
+		"DB2":               true,
+	}
+	for dbType, expectedSupported := range newTypes {
+		t.Run(dbType, func(t *testing.T) {
+			got := CheckDBTypeIfDataExportSupported(dbType)
+			if got != expectedSupported {
+				t.Errorf("CheckDBTypeIfDataExportSupported(%q) = %v, want %v", dbType, got, expectedSupported)
+			}
+		})
+	}
+}
+
+func TestCheckDBTypeIfDataExportSupported_ExistingTypes(t *testing.T) {
+	// 回归测试: 验证已有的 7 种数据源仍在白名单中
+	existingTypes := map[string]bool{
+		"MySQL":               true,
+		"PostgreSQL":          true,
+		"Oracle":              true,
+		"SQL Server":          true,
+		"OceanBase For MySQL": true,
+		"Hive":                true,
+		"DM":                  true,
+	}
+	for dbType, expectedSupported := range existingTypes {
+		t.Run(dbType, func(t *testing.T) {
+			got := CheckDBTypeIfDataExportSupported(dbType)
+			if got != expectedSupported {
+				t.Errorf("CheckDBTypeIfDataExportSupported(%q) = %v, want %v", dbType, got, expectedSupported)
+			}
+		})
+	}
+}
+
+func TestCheckDBTypeIfDataExportSupported_UnsupportedTypes(t *testing.T) {
+	// 验证未支持的类型返回 false
+	unsupportedTypes := map[string]bool{
+		"MongoDB":   false,
+		"Redis":     false,
+		"UnknownDB": false,
+		"":          false,
+	}
+	for dbType, expectedSupported := range unsupportedTypes {
+		t.Run(dbType, func(t *testing.T) {
+			got := CheckDBTypeIfDataExportSupported(dbType)
+			if got != expectedSupported {
+				t.Errorf("CheckDBTypeIfDataExportSupported(%q) = %v, want %v", dbType, got, expectedSupported)
+			}
+		})
+	}
+}