diff --git a/src/connector/odbc/src/todbc_scanner.l b/src/connector/odbc/src/todbc_scanner.l
index e232d4ab2ea714a4d0835072625f8806726ab080..8e178aa366c94d3037d42fa25f0c0b0d1298c70a 100644
--- a/src/connector/odbc/src/todbc_scanner.l
+++ b/src/connector/odbc/src/todbc_scanner.l
@@ -94,13 +94,15 @@ do {                                                 \
 <KEY>.|\n           { return -1; }
 
 <EQ>[[:space:]]+               { }
-<EQ>[^][{}(),;?*=!@/\\\n]+     { set_val(); CHG_STATE(VAL); }
+<EQ>[^][{}(),;?*=!@/\\\n[:space:]]+     { set_val(); CHG_STATE(VAL); }
 <EQ>[{]                        { CHG_STATE(BRACE1); }
 <EQ>.|\n                       { return -1; }
 
-<BRACE1>[^{}\n]+  { set_val(); CHG_STATE(BRACE2); }
+<BRACE1>[[:space:]]+       { }
+<BRACE1>[^{}\n[:space:]]+  { set_val(); CHG_STATE(BRACE2); }
 <BRACE1>.|\n      { return -1; }
 
+<BRACE2>[[:space:]]+       { }
 <BRACE2>[}]       { CHG_STATE(VAL); }
 <BRACE2>.|\n      { return -1; }
 
@@ -112,7 +114,7 @@ int todbc_parse_conn_string(const char *conn, char **dsn, char **uid, char **pwd
   yyscan_t arg = {0};
   params_t params = {0};
   yylex_init(&arg);
-  yyset_debug(1, arg);
+  yyset_debug(0, arg);
   yyset_extra(&params, arg);
   yy_scan_string(conn, arg);
   int ret =yylex(arg);
diff --git a/src/connector/odbc/tests/odbc.py b/src/connector/odbc/tests/odbc.py
index 2d736ca032408b3d58af5ded53d430ee6c1dd4c8..e98110a0d5f5ea2502cd821c858759da9853d703 100644
--- a/src/connector/odbc/tests/odbc.py
+++ b/src/connector/odbc/tests/odbc.py
@@ -1,5 +1,6 @@
 import pyodbc
-cnxn = pyodbc.connect('DSN=TAOS_DSN;UID=root;PWD=taosdata;HOST=localhost:6030', autocommit=True)
+# cnxn = pyodbc.connect('DSN={TAOS_DSN};UID={ root };PWD={ taosdata };HOST={ localhost:6030 }', autocommit=True)
+cnxn = pyodbc.connect('DSN={TAOS_DSN}; UID=root;PWD=taosdata; HOST=localhost:6030', autocommit=True)
 cnxn.setdecoding(pyodbc.SQL_CHAR, encoding='utf-8')
 #cnxn.setdecoding(pyodbc.SQL_WCHAR, encoding='utf-8')
 #cnxn.setencoding(encoding='utf-8')