diff --git a/ppocr/losses/cls_loss.py b/ppocr/losses/cls_loss.py
index ecca5d2e1739631716123d4a793f5ece09d7f9ab..abc5e5b72cb055716715345105b59089f0a96edc 100755
--- a/ppocr/losses/cls_loss.py
+++ b/ppocr/losses/cls_loss.py
@@ -25,6 +25,6 @@ class ClsLoss(nn.Layer):
         self.loss_func = nn.CrossEntropyLoss(reduction='mean')
 
     def forward(self, predicts, batch):
-        label = batch[1]
+        label = batch[1].astype("int64")
         loss = self.loss_func(input=predicts, label=label)
         return {'loss': loss}