diff --git a/python/paddle/fluid/dygraph/dygraph_to_static/partial_program.py b/python/paddle/fluid/dygraph/dygraph_to_static/partial_program.py
index 77d6104982d69212e41f2cafa4b816472b90f9fe..8592e9e8919520549a21df94c17547f2e69788e3 100644
--- a/python/paddle/fluid/dygraph/dygraph_to_static/partial_program.py
+++ b/python/paddle/fluid/dygraph/dygraph_to_static/partial_program.py
@@ -598,16 +598,6 @@ class PartialProgramLayer:
                         == paddle.float16):
                     in_vars[i] = var.astype('float16')
                     in_vars[i].name = name
-                if (self.forward_program.global_block().has_var(name)
-                        and self.forward_program.global_block().var(name).dtype
-                        == paddle.float16):
-                    in_vars[i] = var.astype('float16')
-                    in_vars[i].name = name
-                if (self.backward_program.global_block().has_var(name)
-                        and self.backward_program.global_block().var(name).dtype
-                        == paddle.float16):
-                    in_vars[i] = var.astype('float16')
-                    in_vars[i].name = name
 
     @property
     def program(self):