diff --git a/qlib/data/ops.py b/qlib/data/ops.py
index cbc101f47..0edc5e03f 100644
--- a/qlib/data/ops.py
+++ b/qlib/data/ops.py
@@ -14,6 +14,7 @@ from scipy.stats import percentileofscore
 
 from .base import Expression, ExpressionOps
 from ..log import get_module_logger
+from ..utils import get_cls_kwargs
 
 try:
     from ._libs.rolling import rolling_slope, rolling_rsquare, rolling_resi
@@ -1496,15 +1497,20 @@ class OpsWrapper:
         self._ops = {}
 
     def register(self, ops_list):
-        for operator in ops_list:
-            if not issubclass(operator, ExpressionOps):
-                raise TypeError("operator must be subclass of ExpressionOps, not {}".format(operator))
+        for _operator in ops_list:
+            if isinstance(_operator, dict):
+                _ops_class, _ = get_cls_kwargs(_operator)
+            else:
+                _ops_class = _operator
 
-            if operator.__name__ in self._ops:
+            if not issubclass(_ops_class, ExpressionOps):
+                raise TypeError("operator must be subclass of ExpressionOps, not {}".format(_ops_class))
+
+            if _ops_class.__name__ in self._ops:
                 get_module_logger(self.__class__.__name__).warning(
-                    "The custom operator [{}] will override the qlib default definition".format(operator.__name__)
+                    "The custom operator [{}] will override the qlib default definition".format(_ops_class.__name__)
                 )
-            self._ops[operator.__name__] = operator
+            self._ops[_ops_class.__name__] = _ops_class
 
     def __getattr__(self, key):
         if key not in self._ops: