diff --git a/debug/accuracy_tools/msprobe/core/service.py b/debug/accuracy_tools/msprobe/core/service.py
index af31a15d3dec41bbc960e19db92c3d6267295109..a914c23031c38859bbdb770826e269ef2cedf372 100644
--- a/debug/accuracy_tools/msprobe/core/service.py
+++ b/debug/accuracy_tools/msprobe/core/service.py
@@ -119,7 +119,8 @@ class BaseService(ABC):
         self._process_iteration()
         if self._is_debug_level:
             return
-        self.model = model
+        if model:
+            self.model = model
         if self._is_need_module_hook and self.model not in self.hooked_modules:
             self._register_module_hook()
             self.hooked_modules.append(self.model)