diff --git a/paddleslim/common/sa_controller.py b/paddleslim/common/sa_controller.py
index 4a5b39b5b8d11cce276e64e47ca209d6e2459c89..9596a0552a5f268846d5def1c7d9c2b09491d7a6 100644
--- a/paddleslim/common/sa_controller.py
+++ b/paddleslim/common/sa_controller.py
@@ -48,7 +48,11 @@ class SAController(EvolutionaryController):
             reduce_rate(float): The decay rate of temperature.
             init_temperature(float): Init temperature.
             max_try_times(int): max try times before get legal tokens.
-            init_tokens(list<int>): The initial tokens.
+            init_tokens(list<int>): The initial tokens. Default: None.
+            reward(float): The reward of current tokens. Default: -1.
+            max_reward(float): The max reward in the search of sanas, in general, best tokens get max reward. Default: -1.
+            iters(int): The iteration of sa controller. Default: 0.
+            best_tokens(list<int>): The best tokens in the search of sanas, in general, best tokens get max reward. Default: None.
             constrain_func(function): The callback function used to check whether the tokens meet constraint. None means there is no constraint. Default: None.
             checkpoints(str): if checkpoint is None, donnot save checkpoints, else save scene to checkpoints file.
         """
diff --git a/paddleslim/nas/sa_nas.py b/paddleslim/nas/sa_nas.py
index b151195420bd812b3cf36e4bf2e28de652045d8c..90e65d42aae47d0fd7d3c15955c3d2f7bd0693a1 100644
--- a/paddleslim/nas/sa_nas.py
+++ b/paddleslim/nas/sa_nas.py
@@ -41,7 +41,7 @@ class SANAS(object):
                  reduce_rate=0.85,
                  search_steps=300,
                  key="sa_nas",
-                 save_checkpoint=None,
+                 save_checkpoint='nas_checkpoint',
                  load_checkpoint=None,
                  is_server=False):
         """
@@ -55,6 +55,8 @@ class SANAS(object):
             reduce_rate(float): The decay rate used in simulated annealing search strategy.
             search_steps(int): The steps of searching.
             key(str): Identity used in communication between controller server and clients.
+            save_checkpoint(string|None): The directory of checkpoint to save, if set to None, not save checkpoint. Default: 'nas_checkpoint'.
+            load_checkpoint(string|None): The directory of checkpoint to load, if set to None, not load checkpoint. Default: None.
             is_server(bool): Whether current host is controller server. Default: True.
         """
         if not is_server: