diff --git a/tests/pytest/util/constant.py b/tests/pytest/util/constant.py
index cfbdc4ded08bc7e48cf785e1bb50d612f8f82dcd..eadc30d2dfb4e2f371b0a761ac81179589affd49 100644
--- a/tests/pytest/util/constant.py
+++ b/tests/pytest/util/constant.py
@@ -9,6 +9,7 @@ TAOS_DATA_TYPE  = [
     "TIMESTAMP",
     # "MEDIUMBLOB", "BLOB", # add in 3.x
     # "DECIMAL", "NUMERIC", # add in 3.x
+    "JSON", # only for tag
 ]
 
 TAOS_NUM_TYPE   = [