diff --git a/demo_tensorflow.py b/demo_tensorflow.py
index af96bb14..d0abfce9 100644
--- a/demo_tensorflow.py
+++ b/demo_tensorflow.py
@@ -4,7 +4,7 @@
 
 def parse_args():
     parser = argparse.ArgumentParser("Run a demo.")
-    parser.add_argument("--method", type=str, default="perdqn")
+    parser.add_argument("--method", type=str, default="qrdqn")
     parser.add_argument("--env", type=str, default="classic_control")
     parser.add_argument("--env-id", type=str, default="CartPole-v1")
     parser.add_argument("--test", type=int, default=0)
diff --git a/xuance/tensorflow/learners/qlearning_family/qrdqn_learner.py b/xuance/tensorflow/learners/qlearning_family/qrdqn_learner.py
index 0f6200fc..9abb9fad 100644
--- a/xuance/tensorflow/learners/qlearning_family/qrdqn_learner.py
+++ b/xuance/tensorflow/learners/qlearning_family/qrdqn_learner.py
@@ -5,14 +5,13 @@ class QRDQN_Learner(Learner):
     def __init__(self,
                  policy: tk.Model,
                  optimizer: tk.optimizers.Optimizer,
-                 summary_writer: Optional[SummaryWriter] = None,
                  device: str = "cpu:0",
                  model_dir: str = "./",
                  gamma: float = 0.99,
                  sync_frequency: int = 100):
         self.gamma = gamma
         self.sync_frequency = sync_frequency
-        super(QRDQN_Learner, self).__init__(policy, optimizer, summary_writer, device, model_dir)
+        super(QRDQN_Learner, self).__init__(policy, optimizer, device, model_dir)
 
     def update(self, obs_batch, act_batch, rew_batch, next_batch, terminal_batch):
         self.iterations += 1
@@ -22,8 +21,8 @@ def update(self, obs_batch, act_batch, rew_batch, next_batch, terminal_batch):
             ter_batch = tf.convert_to_tensor(terminal_batch)
 
             with tf.GradientTape() as tape:
-                _, _, evalZ, _ = self.policy(obs_batch)
-                _, targetA, _, targetZ = self.policy(next_batch)
+                _, _, evalZ = self.policy(obs_batch)
+                _, targetA, targetZ = self.policy.target(next_batch)
                 current_quantile = tf.math.reduce_sum(evalZ * tf.expand_dims(tf.one_hot(act_batch, evalZ.shape[1]), axis=-1), axis=1)
                 target_quantile = tf.math.reduce_sum(targetZ * tf.expand_dims(tf.one_hot(targetA, evalZ.shape[1]), axis=-1), axis=1)
                 target_quantile = tf.expand_dims(rew_batch, 1) + self.gamma * target_quantile * (1 - tf.expand_dims(ter_batch, 1))
@@ -41,6 +40,11 @@ def update(self, obs_batch, act_batch, rew_batch, next_batch, terminal_batch):
                 self.policy.copy_target()
 
             lr = self.optimizer._decayed_lr(tf.float32)
-            self.writer.add_scalar("Qloss", loss.numpy(), self.iterations)
-            self.writer.add_scalar("predictQ", tf.math.reduce_mean(current_quantile).numpy(), self.iterations)
-            self.writer.add_scalar("lr", lr.numpy(), self.iterations)
+
+            info = {
+                "Qloss": loss.numpy(),
+                "predictQ": tf.math.reduce_mean(current_quantile).numpy(),
+                "lr": lr.numpy()
+            }
+
+            return info
diff --git a/xuance/tensorflow/policies/deterministic.py b/xuance/tensorflow/policies/deterministic.py
index d2f1d622..b44583b7 100644
--- a/xuance/tensorflow/policies/deterministic.py
+++ b/xuance/tensorflow/policies/deterministic.py
@@ -342,7 +342,7 @@ def __init__(self,
         self.target_Zhead = QRDQNhead(self.representation.output_shapes['state'][0], self.action_dim, self.quantile_num,
                                       hidden_size,
                                       normalize, initialize, activation, device)
-        self.copy_target()
+        self.target_Zhead.set_weights(self.eval_Zhead.get_weights())
 
     def call(self, observation: Union[np.ndarray, dict], **kwargs):
         outputs = self.representation(observation)