diff --git a/learnware/market/easy2/checker.py b/learnware/market/easy2/checker.py
index 68aa02f..1ae8aa7 100644
--- a/learnware/market/easy2/checker.py
+++ b/learnware/market/easy2/checker.py
@@ -101,7 +101,7 @@ class EasyStatChecker(BaseChecker):
                 logger.warning("input shapes of model and semantic specifications are different")
                 return self.INVALID_LEARNWARE
 
-            spec_type = parse_specification_type(learnware.get_specification())
+            spec_type = parse_specification_type(learnware.get_specification().stat_spec)
             if spec_type is None:
                 logger.warning(f"No valid specification is found in stat spec {spec_type}")
                 return self.INVALID_LEARNWARE
diff --git a/learnware/market/easy2/searcher.py b/learnware/market/easy2/searcher.py
index 8feb5d9..f86c06c 100644
--- a/learnware/market/easy2/searcher.py
+++ b/learnware/market/easy2/searcher.py
@@ -565,7 +565,7 @@ class EasyStatSearcher(BaseSearcher):
         max_search_num: int = 5,
         search_method: str = "greedy",
     ) -> Tuple[List[float], List[Learnware], float, List[Learnware]]:
-        self.stat_spec_type = parse_specification_type(stat_spec=user_info.stat_info)
+        self.stat_spec_type = parse_specification_type(stat_specs=user_info.stat_info)
         if self.stat_spec_type is None:
             raise KeyError("No supported stat specification is given in the user info")
 
@@ -646,7 +646,7 @@ class EasySearcher(BaseSearcher):
         if len(learnware_list) == 0:
             return [], [], 0.0, []
 
-        if parse_specification_type(stat_spec=user_info.stat_info) is not None:
+        if parse_specification_type(stat_specs=user_info.stat_info) is not None:
             return self.stat_searcher(learnware_list, user_info, max_search_num, search_method)
         else:
             return None, learnware_list, 0.0, None
diff --git a/learnware/market/utils.py b/learnware/market/utils.py
index c0cc319..76d41b9 100644
--- a/learnware/market/utils.py
+++ b/learnware/market/utils.py
@@ -2,9 +2,8 @@ from ..specification import Specification
 
 
 def parse_specification_type(
-    stat_spec: Specification, spec_list=["RKMETableSpecification", "RKMETextSpecification", "RKMEImageSpecification"]
+    stat_specs: dict, spec_list=["RKMETableSpecification", "RKMETextSpecification", "RKMEImageSpecification"]
 ):
-    stat_specs = stat_spec.stat_spec
     for spec in spec_list:
         if spec in stat_specs:
             return spec
diff --git a/learnware/reuse/job_selector.py b/learnware/reuse/job_selector.py
index 7503b4a..a131fd5 100644
--- a/learnware/reuse/job_selector.py
+++ b/learnware/reuse/job_selector.py
@@ -49,7 +49,7 @@ class JobSelectorReuser(BaseReuser):
         """
         raw_user_data = user_data
         if isinstance(user_data[0], str):
-            stat_spec_type = parse_specification_type(self.learnware_list[0].get_specification())
+            stat_spec_type = parse_specification_type(self.learnware_list[0].get_specification().stat_spec)
             assert (
                 stat_spec_type == "RKMETextSpecification"
             ), "stat_spec_type must be 'RKMETextSpecification' when user data is the List of string."
@@ -97,7 +97,7 @@ class JobSelectorReuser(BaseReuser):
             user_data_num = len(user_data)
             return np.array([0] * user_data_num)
         else:
-            stat_spec_type = parse_specification_type(self.learnware_list[0].get_specification())
+            stat_spec_type = parse_specification_type(self.learnware_list[0].get_specification().stat_spec)
             learnware_rkme_spec_list = [
                 learnware.specification.get_stat_spec_by_name(stat_spec_type) for learnware in self.learnware_list
             ]