diff --git a/src/connector/python/taos/constants.py b/src/connector/python/taos/constants.py
index 8ad5b69fc099718fa4f4b8c08cf689b17663eae0..34044a15fc0cd73323552f1b4b8c280d6cad5a9b 100644
--- a/src/connector/python/taos/constants.py
+++ b/src/connector/python/taos/constants.py
@@ -25,6 +25,7 @@ class FieldType(object):
     C_SMALLINT_UNSIGNED = 12
     C_INT_UNSIGNED = 13
     C_BIGINT_UNSIGNED = 14
+    C_JSON = 15
     # NULL value definition
     # NOTE: These values should change according to C definition in tsdb.h
     C_BOOL_NULL = 0x02
diff --git a/src/connector/python/taos/field.py b/src/connector/python/taos/field.py
index b0bec58b932f2136b868739bb28fca04de759e3f..9d1799d367185e28b69f3cd1fe0bc0d0d14aa7fd 100644
--- a/src/connector/python/taos/field.py
+++ b/src/connector/python/taos/field.py
@@ -207,6 +207,7 @@ CONVERT_FUNC = {
     FieldType.C_SMALLINT_UNSIGNED: _crow_smallint_unsigned_to_python,
     FieldType.C_INT_UNSIGNED: _crow_int_unsigned_to_python,
     FieldType.C_BIGINT_UNSIGNED: _crow_bigint_unsigned_to_python,
+    FieldType.C_JSON: _crow_nchar_to_python,
 }
 
 CONVERT_FUNC_BLOCK = {
@@ -224,6 +225,7 @@ CONVERT_FUNC_BLOCK = {
     FieldType.C_SMALLINT_UNSIGNED: _crow_smallint_unsigned_to_python,
     FieldType.C_INT_UNSIGNED: _crow_int_unsigned_to_python,
     FieldType.C_BIGINT_UNSIGNED: _crow_bigint_unsigned_to_python,
+    FieldType.C_JSON: _crow_nchar_to_python_block,
 }
 
 # Corresponding TAOS_FIELD structure in C