diff --git a/qlib/contrib/model/pytorch_alstm.py b/qlib/contrib/model/pytorch_alstm.py
index 135ce2e39..0ce8542e9 100644
--- a/qlib/contrib/model/pytorch_alstm.py
+++ b/qlib/contrib/model/pytorch_alstm.py
@@ -138,7 +138,7 @@ class ALSTM(Model):
 
     @property
     def use_gpu(self):
-        self.device == torch.device("cpu")
+        self.device != torch.device("cpu")
 
     def mse(self, pred, label):
         loss = (pred - label) ** 2
diff --git a/qlib/contrib/model/pytorch_alstm_ts.py b/qlib/contrib/model/pytorch_alstm_ts.py
index 7b4eddbbb..21867d951 100644
--- a/qlib/contrib/model/pytorch_alstm_ts.py
+++ b/qlib/contrib/model/pytorch_alstm_ts.py
@@ -143,7 +143,7 @@ class ALSTM(Model):
 
     @property
     def use_gpu(self):
-        self.device == torch.device("cpu")
+        self.device != torch.device("cpu")
 
     def mse(self, pred, label):
         loss = (pred - label) ** 2
diff --git a/qlib/contrib/model/pytorch_gats.py b/qlib/contrib/model/pytorch_gats.py
index 906af189b..0c66211b8 100644
--- a/qlib/contrib/model/pytorch_gats.py
+++ b/qlib/contrib/model/pytorch_gats.py
@@ -151,7 +151,7 @@ class GATs(Model):
 
     @property
     def use_gpu(self):
-        self.device == torch.device("cpu")
+        self.device != torch.device("cpu")
 
     def mse(self, pred, label):
         loss = (pred - label) ** 2
diff --git a/qlib/contrib/model/pytorch_gats_ts.py b/qlib/contrib/model/pytorch_gats_ts.py
index 4cce0e960..1c702da0f 100644
--- a/qlib/contrib/model/pytorch_gats_ts.py
+++ b/qlib/contrib/model/pytorch_gats_ts.py
@@ -172,7 +172,7 @@ class GATs(Model):
 
     @property
     def use_gpu(self):
-        self.device == torch.device("cpu")
+        self.device != torch.device("cpu")
 
     def mse(self, pred, label):
         loss = (pred - label) ** 2
diff --git a/qlib/contrib/model/pytorch_gru.py b/qlib/contrib/model/pytorch_gru.py
index bf4e05cfd..e25e13212 100755
--- a/qlib/contrib/model/pytorch_gru.py
+++ b/qlib/contrib/model/pytorch_gru.py
@@ -138,7 +138,7 @@ class GRU(Model):
 
     @property
     def use_gpu(self):
-        self.device == torch.device("cpu")
+        self.device != torch.device("cpu")
 
     def mse(self, pred, label):
         loss = (pred - label) ** 2
diff --git a/qlib/contrib/model/pytorch_gru_ts.py b/qlib/contrib/model/pytorch_gru_ts.py
index 36b2e1492..6edddd755 100755
--- a/qlib/contrib/model/pytorch_gru_ts.py
+++ b/qlib/contrib/model/pytorch_gru_ts.py
@@ -143,7 +143,7 @@ class GRU(Model):
 
     @property
     def use_gpu(self):
-        self.device == torch.device("cpu")
+        self.device != torch.device("cpu")
 
     def mse(self, pred, label):
         loss = (pred - label) ** 2
diff --git a/qlib/contrib/model/pytorch_lstm.py b/qlib/contrib/model/pytorch_lstm.py
index e8fa94abc..28d07665c 100755
--- a/qlib/contrib/model/pytorch_lstm.py
+++ b/qlib/contrib/model/pytorch_lstm.py
@@ -134,7 +134,7 @@ class LSTM(Model):
 
     @property
     def use_gpu(self):
-        self.device == torch.device("cpu")
+        self.device != torch.device("cpu")
 
     def mse(self, pred, label):
         loss = (pred - label) ** 2
@@ -291,10 +291,7 @@ class LSTM(Model):
             x_batch = torch.from_numpy(x_values[begin:end]).float().to(self.device)
 
             with torch.no_grad():
-                if self.use_gpu:
-                    pred = self.lstm_model(x_batch).detach().cpu().numpy()
-                else:
-                    pred = self.lstm_model(x_batch).detach().numpy()
+                pred = self.lstm_model(x_batch).detach().cpu().numpy()
 
             preds.append(pred)
 
diff --git a/qlib/contrib/model/pytorch_lstm_ts.py b/qlib/contrib/model/pytorch_lstm_ts.py
index dfac8d1f6..c6e99d19e 100755
--- a/qlib/contrib/model/pytorch_lstm_ts.py
+++ b/qlib/contrib/model/pytorch_lstm_ts.py
@@ -139,7 +139,7 @@ class LSTM(Model):
 
     @property
     def use_gpu(self):
-        self.device == torch.device("cpu")
+        self.device != torch.device("cpu")
 
     def mse(self, pred, label):
         loss = (pred - label) ** 2
diff --git a/qlib/contrib/model/pytorch_tabnet.py b/qlib/contrib/model/pytorch_tabnet.py
index 950c2dffa..34d6d82f0 100644
--- a/qlib/contrib/model/pytorch_tabnet.py
+++ b/qlib/contrib/model/pytorch_tabnet.py
@@ -118,7 +118,7 @@ class TabnetModel(Model):
 
     @property
     def use_gpu(self):
-        self.device == torch.device("cpu")
+        self.device != torch.device("cpu")
 
     def pretrain_fn(self, dataset=DatasetH, pretrain_file="./pretrain/best.model"):
         get_or_create_path(pretrain_file)