diff --git a/packages/dbgpt-ext/src/dbgpt_ext/datasource/rdbms/conn_postgresql.py b/packages/dbgpt-ext/src/dbgpt_ext/datasource/rdbms/conn_postgresql.py
index 1807eef57..b400bca91 100644
--- a/packages/dbgpt-ext/src/dbgpt_ext/datasource/rdbms/conn_postgresql.py
+++ b/packages/dbgpt-ext/src/dbgpt_ext/datasource/rdbms/conn_postgresql.py
@@ -46,6 +46,9 @@ class PostgreSQLParameters(RDBMSDatasourceParameters):
         """Create PostgreSQL connector."""
         return PostgreSQLConnector.from_parameters(self)
 
+    def db_url(self, ssl: bool = False, charset: Optional[str] = None) -> str:
+        return f"{self.driver}://{self.user}:{self.password}@{self.host}:{self.port}/{self.database}"
+
 
 class PostgreSQLConnector(RDBMSConnector):
     """PostgreSQL connector."""