diff --git a/paddlepalm/utils/reader_helper.py b/paddlepalm/utils/reader_helper.py
index 63362b3ba19d43511e290dbe21cf733b283bbec5..75bd484a2b18f3cad498745a23def1b57813df1b 100644
--- a/paddlepalm/utils/reader_helper.py
+++ b/paddlepalm/utils/reader_helper.py
@@ -25,11 +25,13 @@ from paddle.fluid import layers
 def _check_and_adapt_shape_dtype(rt_val, attr, message=""):
     if not isinstance(rt_val, np.ndarray):
         rt_val = np.array(rt_val)
+        print(message + 'int first if block.')
         assert rt_val.dtype != np.dtype('O'), "yielded data is not a valid tensor(number of elements on some dimension may differ)."
         if rt_val.dtype == np.dtype('float64'):
             rt_val = rt_val.astype('float32')
     
     shape, dtype = attr
+    # rt_val = np.array(rt_val, dtype=dtype)
     assert rt_val.dtype == np.dtype(dtype), message+"yielded data type not consistent with attr settings. Expect: {}, receive: {}.".format(rt_val.dtype, np.dtype(dtype))
     assert len(shape) == rt_val.ndim, message+"yielded data rank(ndim) not consistent with attr settings. Expect: {}, receive: {}.".format(len(shape), rt_val.ndim)
     for rt, exp in zip(rt_val.shape, shape):
@@ -161,14 +163,14 @@ def create_joint_iterator_fn(iterators, iterator_prefixes, joint_shape_and_dtype
 
                 if 'token_ids' in outputs:
                     val1 = len(outputs['token_ids'])
-                    val = _check_and_adapt_shape_dtype([val1], [[1], 'int64'])
+                    val = _check_and_adapt_shape_dtype(np.array([val1], dtype='int64'), [[1], 'int64'], iterator_prefixes[id]+' tokenids: ')
                     results[outname_to_pos['batch_size']] = val
 
                     val2 = len(outputs['token_ids'][0])
-                    val = _check_and_adapt_shape_dtype([val2], [[1], 'int64'])
+                    val = _check_and_adapt_shape_dtype(np.array([val2], dtype='int64'), [[1], 'int64'])
                     results[outname_to_pos['seqlen']] = val
 
-                    val = _check_and_adapt_shape_dtype([val1*val2], [[1], 'int64'])
+                    val = _check_and_adapt_shape_dtype(np.array([val1*val2], dtype='int64'), [[1], 'int64'])
                     results[outname_to_pos['batchsize_x_seqlen']] = val
                 else:
                     if not has_show_warn:
diff --git a/setup.py b/setup.py
index 52488eb9714e5c1d50dd763037943b8257ab425f..c24df86a817be53dbc303c53e8dbf0f8b37a707a 100644
--- a/setup.py
+++ b/setup.py
@@ -21,7 +21,7 @@ Authors: zhouxiangyang(zhouxiangyang@baidu.com)
 Date:    2019/09/29 21:00:01
 """
 import setuptools
-with open("README.md", "r") as fh:
+with open("README.md", "r", encoding='utf-8') as fh:
     long_description = fh.read()
 setuptools.setup(
     name="paddlepalm",