diff --git a/python/paddle/fluid/framework.py b/python/paddle/fluid/framework.py
index 6d98612a88e1725ba708294a2237d4d38e7fe6bd..bb2a25085495402f1361db6c10d7475792fe9cf1 100644
--- a/python/paddle/fluid/framework.py
+++ b/python/paddle/fluid/framework.py
@@ -4116,6 +4116,7 @@ class Program(object):
         program_str = ""
         for block in self.blocks:
             program_str += block._to_readable_code(skip_op_callstack)
+            program_str += '\n'
         return program_str
 
     def to_string(self, throw_on_error, with_details=False):