diff --git a/odps/readers.py b/odps/readers.py
index 022d3d5..030d31c 100644
--- a/odps/readers.py
+++ b/odps/readers.py
@@ -358,7 +358,7 @@ def __next__(self):
         self._load_columns()
 
         values = self._readline()
-        if values is None:
+        if values is None or len(values) == 0:
             raise StopIteration
 
         if self._filtered_col_idxes: