diff --git a/python/fate/arch/common/base_utils.py b/python/fate/arch/common/base_utils.py
index d01be71d1f..a7025023bb 100644
--- a/python/fate/arch/common/base_utils.py
+++ b/python/fate/arch/common/base_utils.py
@@ -25,9 +25,6 @@
 from enum import Enum, IntEnum
 
 from ._types import BaseType
-from .conf_utils import get_base_config
-
-use_deserialize_safe_module = get_base_config("use_deserialize_safe_module", False)
 
 
 class CustomJSONEncoder(json.JSONEncoder):
@@ -111,8 +108,6 @@ def serialize_b64(src, to_str=False):
 
 def deserialize_b64(src):
     src = base64.b64decode(string_to_bytes(src) if isinstance(src, str) else src)
-    if use_deserialize_safe_module:
-        return restricted_loads(src)
     return pickle.loads(src)
 
 
diff --git a/python/fate/arch/metastore/base_model.py b/python/fate/arch/metastore/base_model.py
index 740e00b935..d3f8a84158 100644
--- a/python/fate/arch/metastore/base_model.py
+++ b/python/fate/arch/metastore/base_model.py
@@ -25,7 +25,7 @@
     IntegerField,
     Metadata,
     Model,
-    TextField,
+    TextField, DateTimeField,
 )
 
 from ..common import EngineType, conf_utils
@@ -40,14 +40,6 @@
 )
 from ..federation import FederationEngine
 
-is_standalone = (
-    conf_utils.get_base_config("default_engines", {}).get(EngineType.FEDERATION).upper()
-    == FederationEngine.STANDALONE
-)
-if is_standalone:
-    from playhouse.apsw_ext import DateTimeField
-else:
-    from peewee import DateTimeField
 
 CONTINUOUS_FIELD_TYPE = {IntegerField, FloatField, DateTimeField}
 AUTO_DATE_TIMESTAMP_FIELD_PREFIX = {
diff --git a/python/fate/arch/metastore/db_models.py b/python/fate/arch/metastore/db_models.py
index d9bf097406..c5fdeef80b 100644
--- a/python/fate/arch/metastore/db_models.py
+++ b/python/fate/arch/metastore/db_models.py
@@ -27,17 +27,13 @@
 )
 
 from ..common import EngineType, conf_utils, file_utils, log
-from ..common.conf_utils import decrypt_database_config
 from ..federation import FederationEngine
 from ..metastore.base_model import BaseModel, DateTimeField, JSONField, SerializedField
 
 LOGGER = log.getLogger()
 
-DATABASE = decrypt_database_config()
-is_standalone = (
-    conf_utils.get_base_config("default_engines", {}).get(EngineType.FEDERATION).upper()
-    == FederationEngine.STANDALONE
-)
+DATABASE = {"name": "xxx"}
+is_standalone = True
 
 
 def singleton(cls, *args, **kw):