diff --git a/ppdet/data/transform/operators.py b/ppdet/data/transform/operators.py
index 0c56d0c5d62e94df47484d0285174e67a6c509c9..df852584a587cf5aba873ffd1ea41d64360417c6 100644
--- a/ppdet/data/transform/operators.py
+++ b/ppdet/data/transform/operators.py
@@ -2032,8 +2032,8 @@ class Pad(BaseOperator):
                 im_h < h and im_w < w
             ), '(h, w) of target size should be greater than (im_h, im_w)'
         else:
-            h = np.ceil(im_h / self.size_divisor) * self.size_divisor
-            w = np.ceil(im_w / self.size_divisor) * self.size_divisor
+            h = int(np.ceil(im_h / self.size_divisor) * self.size_divisor)
+            w = int(np.ceil(im_w / self.size_divisor) * self.size_divisor)
 
         if h == im_h and w == im_w:
             return sample