diff --git a/python/paddle/__init__.py b/python/paddle/__init__.py
index 2cfcde0532a229fa118f135c79d1d8ab02619d33..7312a0d9f807a0e92c3e19f474372f5e543b030e 100755
--- a/python/paddle/__init__.py
+++ b/python/paddle/__init__.py
@@ -14,7 +14,7 @@
 try:
     from paddle.version import full_version as __version__
     from paddle.version import commit as __git_commit__
-    from paddle.cuda_env import *
+    from paddle.cuda_env import *  # noqa: F403
 except ImportError:
     import sys
     sys.stderr.write('''Warning with import paddle: you should not
@@ -35,7 +35,7 @@ from .framework import set_flags  # noqa: F401
 from .framework import disable_static  # noqa: F401
 from .framework import enable_static  # noqa: F401
 from .framework import in_dynamic_mode  # noqa: F401
-from .fluid.dataset import *  # noqa: F401
+from .fluid.dataset import *  # noqa: F401, F403
 from .fluid.lazy_init import LazyGuard  # noqa: F401
 
 from .framework.dtype import iinfo  # noqa: F401
diff --git a/python/paddle/distributed/__init__.py b/python/paddle/distributed/__init__.py
index 6cad46784635ff76f04e2598305775802da3e6d1..13c305b58da7342fee55c9cd2f7858322761d9e9 100644
--- a/python/paddle/distributed/__init__.py
+++ b/python/paddle/distributed/__init__.py
@@ -51,7 +51,7 @@ from .collective import batch_isend_irecv  # noqa: F401
 from .collective import P2POp  # noqa: F401
 from .collective import reduce_scatter  # noqa: F401
 
-from .communication import *  # noqa: F401
+from .communication import stream  # noqa: F401
 
 from .auto_parallel import shard_op  # noqa: F401
 from .auto_parallel import shard_tensor  # noqa: F401
@@ -66,7 +66,8 @@ from paddle.fluid.dygraph.parallel import ParallelEnv  # noqa: F401
 
 from . import cloud_utils  # noqa: F401
 
-from .sharding import *  # noqa: F401
+from .sharding import group_sharded_parallel  # noqa: F401
+from .sharding import save_group_sharded_model  # noqa: F401
 
 from . import rpc
 
diff --git a/python/paddle/distributed/fleet/base/meta_optimizer_factory.py b/python/paddle/distributed/fleet/base/meta_optimizer_factory.py
index 825ccd7889b4eb01d5b7d072ccc3f766d6614a6b..c2e55cfc38d63f65ba42e7d9ec375b0aff40d426 100755
--- a/python/paddle/distributed/fleet/base/meta_optimizer_factory.py
+++ b/python/paddle/distributed/fleet/base/meta_optimizer_factory.py
@@ -12,7 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from ..meta_optimizers import *  # noqa: F401
+from ..meta_optimizers import *  # noqa: F401, F403
 
 __all__ = []
 
diff --git a/python/paddle/distributed/fleet/elastic/collective.py b/python/paddle/distributed/fleet/elastic/collective.py
index b2920d412b6196507516b77db5cfd060a83782ed..aa5c962b99467e89832831171851f5b63a972fcc 100644
--- a/python/paddle/distributed/fleet/elastic/collective.py
+++ b/python/paddle/distributed/fleet/elastic/collective.py
@@ -13,9 +13,11 @@
 # limitations under the License.
 
 import tempfile
+import os
+import shutil
+import paddle
 
-from paddle.distributed.fleet.launch_utils import *
-
+from paddle.distributed.fleet.launch_utils import logger, pull_worker_log, start_local_trainers
 from paddle.distributed.fleet.elastic.manager import LauncherInterface
 
 
diff --git a/python/paddle/distributed/fleet/launch.py b/python/paddle/distributed/fleet/launch.py
index 98919fe241445da237523310d114016c22a42648..5fcc0e6a33b2f6cfce31d24f2478e77ef5050512 100755
--- a/python/paddle/distributed/fleet/launch.py
+++ b/python/paddle/distributed/fleet/launch.py
@@ -65,9 +65,11 @@ import pathlib
 from argparse import ArgumentParser, REMAINDER
 import paddle.fluid as fluid
 from paddle.distributed.fleet import launch_utils
-
-# TODO(danleifeng): Don't import * from a module
-from paddle.distributed.fleet.launch_utils import *
+from paddle.distributed.fleet.launch_utils import (
+    get_host_name_ip, find_free_ports, logger, get_cluster, DeviceMode,
+    start_local_trainers, direct_start, watch_local_trainers,
+    terminate_local_procs, DistributeMode, ParameterServerLauncher, get_logger,
+    check_backend, block_windows_and_macos)
 from paddle.distributed.fleet import cloud_utils
 from paddle.distributed.fleet import ascend_utils
 
diff --git a/python/paddle/distributed/fleet/meta_optimizers/ps_optimizer.py b/python/paddle/distributed/fleet/meta_optimizers/ps_optimizer.py
index c1c40f7213a8b6f2d2ea45af3102baa785fe893b..523a6741102937a7de11b89b6b6e827e022f7a16 100755
--- a/python/paddle/distributed/fleet/meta_optimizers/ps_optimizer.py
+++ b/python/paddle/distributed/fleet/meta_optimizers/ps_optimizer.py
@@ -19,7 +19,7 @@ import subprocess
 import re
 import os
 import platform
-from paddle.distributed.ps.utils.public import *
+from paddle.distributed.ps.utils.public import TrainerRuntimeConfig, build_var_distributed, dtype_to_size, get_dist_env, get_var_mem_size, logger
 from paddle.distributed.passes import PassContext
 from paddle.distributed.ps.utils.ps_factory import PsProgramBuilderFactory
 
diff --git a/python/paddle/distributed/passes/__init__.py b/python/paddle/distributed/passes/__init__.py
index 5f721a1df50df6711f547854f0b6a6789d9df33f..056540a4a1571fe082b1f65770af7832c7ad48f6 100644
--- a/python/paddle/distributed/passes/__init__.py
+++ b/python/paddle/distributed/passes/__init__.py
@@ -13,19 +13,18 @@
 # limitations under the License.
 
 from .pass_base import new_pass, PassManager, PassContext
-from .fuse_all_reduce import *
-from .auto_parallel_gradient_merge import *
-from .auto_parallel_sharding import *
-from .auto_parallel_amp import *
-from .auto_parallel_fp16 import *
-from .auto_parallel_recompute import *
-from .auto_parallel_quantization import *
-from .auto_parallel_data_parallel_optimization import *
-from .auto_parallel_grad_clip import *
-from .cpp_pass import *
-import os
-from .ps_trainer_pass import *
-from .ps_server_pass import *
+from .fuse_all_reduce import *  # noqa: F403
+from .auto_parallel_gradient_merge import *  # noqa: F403
+from .auto_parallel_sharding import *  # noqa: F403
+from .auto_parallel_amp import *  # noqa: F403
+from .auto_parallel_fp16 import *  # noqa: F403
+from .auto_parallel_recompute import *  # noqa: F403
+from .auto_parallel_quantization import *  # noqa: F403
+from .auto_parallel_data_parallel_optimization import *  # noqa: F403
+from .auto_parallel_grad_clip import *  # noqa: F403
+from .cpp_pass import *  # noqa: F403
+from .ps_trainer_pass import *  # noqa: F403
+from .ps_server_pass import *  # noqa: F403
 
 __all__ = [
     'new_pass',
diff --git a/python/paddle/distributed/passes/ps_server_pass.py b/python/paddle/distributed/passes/ps_server_pass.py
index 64c7f7fb9128dda72e140f25d6526cf2e77c5d75..27c10fd1f5bf758d1bfab4d286b23aac629bdeb9 100755
--- a/python/paddle/distributed/passes/ps_server_pass.py
+++ b/python/paddle/distributed/passes/ps_server_pass.py
@@ -12,7 +12,10 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from ..ps.utils.public import *
+import logging
+
+import paddle.fluid as fluid
+from ..ps.utils.public import get_optimize_ops, get_ps_endpoint, get_role_id, get_trainers
 from .pass_base import PassBase, register_pass
 from paddle.optimizer.lr import LRScheduler
 from paddle.optimizer.lr import ExponentialDecay, InverseTimeDecay, NaturalExpDecay, NoamDecay
diff --git a/python/paddle/distributed/passes/ps_trainer_pass.py b/python/paddle/distributed/passes/ps_trainer_pass.py
index 95f4e980cf46b75b8e2a902f5d7bddc6639c9aaa..1b5eb1e442ff12a6eb9d6011d6eca3c3a0891115 100755
--- a/python/paddle/distributed/passes/ps_trainer_pass.py
+++ b/python/paddle/distributed/passes/ps_trainer_pass.py
@@ -14,7 +14,7 @@
 
 import os
 import paddle
-from ..ps.utils.public import *
+from ..ps.utils.public import *  # noqa: F403
 from paddle.framework import core
 from paddle.distributed.passes.pass_base import PassBase, register_pass
 from paddle.fluid.transpiler.details.program_utils import delete_ops
diff --git a/python/paddle/distributed/ps/the_one_ps.py b/python/paddle/distributed/ps/the_one_ps.py
index 965468d737383e960a28f864cc208930c3f1dd40..78ecef22b63e6160651d9417de4a19cd3bd03e4f 100755
--- a/python/paddle/distributed/ps/the_one_ps.py
+++ b/python/paddle/distributed/ps/the_one_ps.py
@@ -18,7 +18,7 @@ import os
 import paddle.fluid as fluid
 from paddle.distributed import fleet
 from paddle.fluid import core
-from paddle.distributed.ps.utils.public import *
+from paddle.distributed.ps.utils.public import *  # noqa: F403
 from paddle.fluid.framework import Program
 from paddle.fluid.compiler import CompiledProgram
 from paddle.fluid.executor import Executor
diff --git a/python/paddle/distributed/ps/utils/ps_factory.py b/python/paddle/distributed/ps/utils/ps_factory.py
index 2fc1a06ad9693ffb7688b18cbc658f0f86dc90c9..1f522ec27f82cf56aa9716f6a64e4fbfb4dda38d 100755
--- a/python/paddle/distributed/ps/utils/ps_factory.py
+++ b/python/paddle/distributed/ps/utils/ps_factory.py
@@ -12,8 +12,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from .ps_program_builder import *
-from .public import *
+from .ps_program_builder import *  # noqa: F403
+from .public import *  # noqa: F403
 
 __all__ = [
     'PsProgramBuilder', 'GeoPsProgramBuilder', 'CpuSyncPsProgramBuilder',
diff --git a/python/paddle/distributed/ps/utils/ps_program_builder.py b/python/paddle/distributed/ps/utils/ps_program_builder.py
index 2a8d273d9923fabce2aa365fe1025f5f2ea37d93..f38ca4f016d1203cf490f9529cd8f47c03ec3eb9 100755
--- a/python/paddle/distributed/ps/utils/ps_program_builder.py
+++ b/python/paddle/distributed/ps/utils/ps_program_builder.py
@@ -12,7 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from .public import *
+from .public import *  # noqa: F403
 from paddle.distributed.fleet.base.private_helper_function import wait_server_ready
 from paddle.distributed.passes import new_pass
 
diff --git a/python/paddle/fluid/tests/test_beam_search_decoder.py b/python/paddle/fluid/tests/test_beam_search_decoder.py
index 7458bf4c57c21fb4e71b8f43699c078755a6cc10..66cd8e89d3237ba1572362af99b06e8c8794c450 100644
--- a/python/paddle/fluid/tests/test_beam_search_decoder.py
+++ b/python/paddle/fluid/tests/test_beam_search_decoder.py
@@ -22,7 +22,7 @@ import paddle.fluid as fluid
 import paddle.fluid.framework as framework
 import paddle.fluid.layers as layers
 from paddle.fluid.executor import Executor
-from paddle.fluid.contrib.decoder.beam_search_decoder import *
+from paddle.fluid.contrib.decoder.beam_search_decoder import BeamSearchDecoder, InitState, StateCell, TrainingDecoder
 import unittest
 
 paddle.enable_static()
diff --git a/python/paddle/fluid/tests/unittests/collective/fleet/test_recv_save_op.py b/python/paddle/fluid/tests/unittests/collective/fleet/test_recv_save_op.py
index 2da9079467f83cc15285566f01c9683bd4258697..927b02d74eb3ef4c6409af27b2db3fbf7a5db882 100644
--- a/python/paddle/fluid/tests/unittests/collective/fleet/test_recv_save_op.py
+++ b/python/paddle/fluid/tests/unittests/collective/fleet/test_recv_save_op.py
@@ -25,7 +25,7 @@ import paddle.fluid as fluid
 import paddle.fluid.core as core
 from paddle.fluid.op import Operator
 from paddle.fluid.framework import Program, program_guard
-from dist_test_utils import *
+from dist_test_utils import remove_ps_flag
 from paddle.fluid.incubate.fleet.parameter_server.mode import DistributedMode
 
 
diff --git a/python/paddle/fluid/tests/unittests/distribution/test_distribution.py b/python/paddle/fluid/tests/unittests/distribution/test_distribution.py
index 4d951a609608ad5864984f28a3248ad21f63eef0..30024c10fee38fdf06497d0fe59cd418be878f51 100644
--- a/python/paddle/fluid/tests/unittests/distribution/test_distribution.py
+++ b/python/paddle/fluid/tests/unittests/distribution/test_distribution.py
@@ -16,7 +16,7 @@ import unittest
 
 import numpy as np
 import paddle
-from paddle.distribution import *
+from paddle.distribution import Categorical, Normal, Uniform
 from paddle.fluid import layers
 
 import config
diff --git a/python/paddle/fluid/tests/unittests/distribution/test_distribution_categorical.py b/python/paddle/fluid/tests/unittests/distribution/test_distribution_categorical.py
index 7be3bcb55751c8d6442368f51f5457f614a05723..4be500b6084dbb744d29bdfe5dc15f263640de66 100644
--- a/python/paddle/fluid/tests/unittests/distribution/test_distribution_categorical.py
+++ b/python/paddle/fluid/tests/unittests/distribution/test_distribution_categorical.py
@@ -17,7 +17,7 @@ import unittest
 import numpy as np
 import paddle
 from paddle import fluid
-from paddle.distribution import *
+from paddle.distribution import Categorical, Distribution, Normal, Uniform
 from paddle.fluid import layers
 
 from test_distribution import DistributionNumpy
diff --git a/python/paddle/fluid/tests/unittests/distribution/test_distribution_normal.py b/python/paddle/fluid/tests/unittests/distribution/test_distribution_normal.py
index 1873ac7efa6b56aaeb49b3ff5afb2bf3d120a54a..d90405599554d5cc34e6b2523c15a7e7bdd3e9a4 100644
--- a/python/paddle/fluid/tests/unittests/distribution/test_distribution_normal.py
+++ b/python/paddle/fluid/tests/unittests/distribution/test_distribution_normal.py
@@ -19,7 +19,7 @@ import config
 import numpy as np
 import paddle
 from paddle import fluid
-from paddle.distribution import *
+from paddle.distribution import Normal
 from paddle.fluid import layers
 from parameterize import TEST_CASE_NAME, parameterize_cls, place, xrand
 import scipy.stats
diff --git a/python/paddle/fluid/tests/unittests/distribution/test_distribution_uniform.py b/python/paddle/fluid/tests/unittests/distribution/test_distribution_uniform.py
index 7b6a3a2a3bd02abf8123f8ff19c040be1fdadd84..6aafa9cb356ce4f723e7d673537386019a30cfbc 100644
--- a/python/paddle/fluid/tests/unittests/distribution/test_distribution_uniform.py
+++ b/python/paddle/fluid/tests/unittests/distribution/test_distribution_uniform.py
@@ -17,7 +17,7 @@ import unittest
 import numpy as np
 import paddle
 from paddle import fluid
-from paddle.distribution import *
+from paddle.distribution import Uniform
 from paddle.fluid import layers
 from paddle.fluid.framework import _test_eager_guard
 
diff --git a/python/paddle/fluid/tests/unittests/dygraph_to_static/test_ifelse.py b/python/paddle/fluid/tests/unittests/dygraph_to_static/test_ifelse.py
index 6870e8c08da4e936b1433846c1f382a67660e5e8..d40c37f3fd666f329944cc52b224e401d867ad58 100644
--- a/python/paddle/fluid/tests/unittests/dygraph_to_static/test_ifelse.py
+++ b/python/paddle/fluid/tests/unittests/dygraph_to_static/test_ifelse.py
@@ -21,7 +21,7 @@ from paddle.fluid.dygraph.dygraph_to_static.program_translator import ProgramTra
 from paddle.fluid.dygraph.dygraph_to_static.utils import Dygraph2StaticException
 import paddle.fluid.core as core
 
-from ifelse_simple_func import *
+from ifelse_simple_func import NetWithControlFlowIf, add_fn, dyfunc_empty_nonlocal, dyfunc_ifelse_ret_int1, dyfunc_ifelse_ret_int2, dyfunc_ifelse_ret_int3, dyfunc_ifelse_ret_int4, dyfunc_with_if_else, dyfunc_with_if_else2, dyfunc_with_if_else3, dyfunc_with_if_else_with_list_geneator, fluid, if_tensor_case, if_with_and_or, if_with_and_or_1, if_with_and_or_2, if_with_and_or_3, if_with_and_or_4, if_with_class_var, loss_fn, nested_if_else, nested_if_else_2, nested_if_else_3
 
 np.random.seed(1)
 
diff --git a/python/paddle/fluid/tests/unittests/dygraph_to_static/test_origin_info.py b/python/paddle/fluid/tests/unittests/dygraph_to_static/test_origin_info.py
index 07260c9c0b868bac417e29807d4ba094454b33e6..744cc40cdfb583b0517750dc1b34b681a68cf9e9 100644
--- a/python/paddle/fluid/tests/unittests/dygraph_to_static/test_origin_info.py
+++ b/python/paddle/fluid/tests/unittests/dygraph_to_static/test_origin_info.py
@@ -16,7 +16,7 @@ import sys
 import unittest
 
 from paddle.fluid.dygraph.dygraph_to_static.ast_transformer import DygraphToStaticAst
-from paddle.fluid.dygraph.dygraph_to_static.origin_info import *
+from paddle.fluid.dygraph.dygraph_to_static.origin_info import Location, ORIGI_INFO, OriginInfo, attach_origin_info, create_and_update_origin_info_map, gast, inspect, unwrap
 from paddle.fluid.dygraph.dygraph_to_static.utils import ast_to_func
 from paddle.fluid.dygraph.jit import declarative
 
diff --git a/python/paddle/fluid/tests/unittests/dygraph_to_static/test_tsm.py b/python/paddle/fluid/tests/unittests/dygraph_to_static/test_tsm.py
index 6da285c01b3ecbd9d01ad997600c3d1d04ac4a55..7561e7aa13798acb6cbb2977f363a0c75d0adb33 100644
--- a/python/paddle/fluid/tests/unittests/dygraph_to_static/test_tsm.py
+++ b/python/paddle/fluid/tests/unittests/dygraph_to_static/test_tsm.py
@@ -22,7 +22,7 @@ import paddle
 import paddle.fluid as fluid
 from paddle.fluid.dygraph import declarative, ProgramTranslator, to_variable
 from paddle.fluid.dygraph.nn import Conv2D, BatchNorm, Linear, Pool2D
-from tsm_config_utils import *
+from tsm_config_utils import merge_configs, parse_config, print_configs
 
 random.seed(0)
 np.random.seed(0)
diff --git a/python/paddle/fluid/tests/unittests/ps/ps_dnn_trainer.py b/python/paddle/fluid/tests/unittests/ps/ps_dnn_trainer.py
index d54f86b38633828abeb6a3df55c245335781c0ca..d40d4f07719f00df4239f4c724e880b1a16c0ef9 100755
--- a/python/paddle/fluid/tests/unittests/ps/ps_dnn_trainer.py
+++ b/python/paddle/fluid/tests/unittests/ps/ps_dnn_trainer.py
@@ -13,7 +13,7 @@
 # limitations under the License.
 
 import paddle.distributed.fleet.base.role_maker as role_maker
-from paddle.distributed.ps.utils.ps_program_builder import *
+from paddle.distributed.ps.utils.ps_program_builder import debug_program, logger, new_pass, ps_log_root_dir
 import paddle.distributed.fleet as fleet
 import argparse
 import sys
diff --git a/python/paddle/fluid/tests/unittests/ps/test_fl_ps.py b/python/paddle/fluid/tests/unittests/ps/test_fl_ps.py
index 0a993217ebad2fdf5adc5365b9ec553cac38b520..2726d7c10cdbe19984a84b73a1bd0d558cf7d5b6 100755
--- a/python/paddle/fluid/tests/unittests/ps/test_fl_ps.py
+++ b/python/paddle/fluid/tests/unittests/ps/test_fl_ps.py
@@ -35,7 +35,6 @@ class FlPsTest(unittest.TestCase):
         prepare_python_path_and_return_module(__file__)
         exitcode = os.system(' '.join(cmd))
         '''
-        pass
 
 
 if __name__ == '__main__':
diff --git a/python/paddle/fluid/tests/unittests/ps/test_the_one_ps.py b/python/paddle/fluid/tests/unittests/ps/test_the_one_ps.py
index c0d10d63687f4749ac8e9e0d33f43306a408d722..b561d82fc5f30c647e627abbdb870ff09a435907 100755
--- a/python/paddle/fluid/tests/unittests/ps/test_the_one_ps.py
+++ b/python/paddle/fluid/tests/unittests/ps/test_the_one_ps.py
@@ -14,7 +14,7 @@
 
 import unittest
 
-from paddle.fluid.tests.unittests.distributed_passes.ps_pass_test_base import *
+from paddle.fluid.tests.unittests.distributed_passes.ps_pass_test_base import PsPassTestBase, remove_path_if_exists
 from paddle.distributed.ps.utils.public import logger, ps_log_root_dir
 import paddle.distributed.fleet.proto.the_one_ps_pb2 as ps_pb2  # noqa: F401
 from google.protobuf import text_format  # noqa: F401
diff --git a/python/paddle/fluid/tests/unittests/test_dataloader_dataset.py b/python/paddle/fluid/tests/unittests/test_dataloader_dataset.py
index 9734bfef3f0b164dce5c808c09e3c8844a7f056c..6b3ab060c3dbd82b6215464bbf92ba54293c30c4 100644
--- a/python/paddle/fluid/tests/unittests/test_dataloader_dataset.py
+++ b/python/paddle/fluid/tests/unittests/test_dataloader_dataset.py
@@ -17,7 +17,7 @@ import unittest
 
 import paddle
 import paddle.vision.transforms as transforms
-from paddle.io import *
+from paddle.io import Dataset
 from paddle.fluid.framework import _test_eager_guard
 
 
diff --git a/python/paddle/fluid/tests/unittests/test_default_scope_funcs.py b/python/paddle/fluid/tests/unittests/test_default_scope_funcs.py
index 03e49216559535081eb842d8190ad28a01bfc5cd..beae3124ced823ecfd98a813e6af639168057203 100644
--- a/python/paddle/fluid/tests/unittests/test_default_scope_funcs.py
+++ b/python/paddle/fluid/tests/unittests/test_default_scope_funcs.py
@@ -12,7 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from paddle.fluid.default_scope_funcs import *
+from paddle.fluid.default_scope_funcs import enter_local_scope, find_var, get_cur_scope, leave_local_scope, scoped_function, var
 import unittest
 
 
diff --git a/python/paddle/fluid/tests/unittests/test_dist_train.py b/python/paddle/fluid/tests/unittests/test_dist_train.py
index e32908aea8fbc8c915135ed90dfc608a49d69600..7299854241907972a6cc97dad725554facb68796 100644
--- a/python/paddle/fluid/tests/unittests/test_dist_train.py
+++ b/python/paddle/fluid/tests/unittests/test_dist_train.py
@@ -26,7 +26,7 @@ from paddle.fluid.layers.io import ListenAndServ
 from paddle.fluid.layers.io import Recv
 from paddle.fluid.layers.io import Send
 import paddle.fluid.layers.ops as ops
-from dist_test_utils import *
+from dist_test_utils import remove_ps_flag
 
 from paddle.fluid import core
 
diff --git a/python/paddle/fluid/tests/unittests/test_distributions.py b/python/paddle/fluid/tests/unittests/test_distributions.py
index daf2adacb41688571efadd7db2b6b9d61ce59933..d79e8784e2b22037fe109ac9e751ad6b59121842 100644
--- a/python/paddle/fluid/tests/unittests/test_distributions.py
+++ b/python/paddle/fluid/tests/unittests/test_distributions.py
@@ -16,7 +16,7 @@ import numpy as np
 import unittest
 from paddle import fluid
 from paddle.fluid import layers
-from paddle.fluid.layers.distributions import *
+from paddle.fluid.layers.distributions import Categorical, MultivariateNormalDiag, Normal, Uniform
 import math
 
 
diff --git a/python/paddle/fluid/tests/unittests/test_dynrnn_gradient_check.py b/python/paddle/fluid/tests/unittests/test_dynrnn_gradient_check.py
index a629158cb9367d5ba481061026c46665afa6848b..7b7921d91c22acb99a3f95ae501f020a24f7e609 100644
--- a/python/paddle/fluid/tests/unittests/test_dynrnn_gradient_check.py
+++ b/python/paddle/fluid/tests/unittests/test_dynrnn_gradient_check.py
@@ -18,7 +18,7 @@ import collections
 import paddle
 import paddle.fluid as fluid
 import unittest
-from decorator_helper import *
+from decorator_helper import prog_scope
 
 
 class Memory(object):
diff --git a/python/paddle/fluid/tests/unittests/test_imperative_load_static_param.py b/python/paddle/fluid/tests/unittests/test_imperative_load_static_param.py
index a1c9708923435186b7182483187cefe0b2712713..e61671e39f1698cf8e6db760238d123212cbec09 100644
--- a/python/paddle/fluid/tests/unittests/test_imperative_load_static_param.py
+++ b/python/paddle/fluid/tests/unittests/test_imperative_load_static_param.py
@@ -15,7 +15,7 @@
 import unittest
 import paddle.fluid as fluid
 import paddle.fluid.framework as framework
-from paddle.fluid.dygraph.nn import *
+from paddle.fluid.dygraph.nn import BatchNorm, Conv2D, Conv3D, Embedding, GroupNorm, LayerNorm, Linear, NCE, PRelu
 import numpy as np
 import os
 import tempfile
diff --git a/python/paddle/fluid/tests/unittests/test_lazy_init.py b/python/paddle/fluid/tests/unittests/test_lazy_init.py
index 07a290234da877479c5f4b70ca6d16cb10a59d98..79b3429b10e0bf78852b84462a0db59b55fa476f 100644
--- a/python/paddle/fluid/tests/unittests/test_lazy_init.py
+++ b/python/paddle/fluid/tests/unittests/test_lazy_init.py
@@ -17,7 +17,7 @@ import unittest
 import numpy as np
 from paddle import LazyGuard
 from paddle.nn import Linear, Layer
-from paddle.nn.initializer import *
+from paddle.nn.initializer import Constant, Normal, TruncatedNormal, Uniform, XavierNormal, XavierUniform
 from paddle.fluid import unique_name
 
 
diff --git a/python/paddle/fluid/tests/unittests/test_listen_and_serv_op.py b/python/paddle/fluid/tests/unittests/test_listen_and_serv_op.py
index 62e063179fa4c840ddb6c361ae654561c59a67ac..897689d55971428d2793c05b8af4fb393c014a04 100644
--- a/python/paddle/fluid/tests/unittests/test_listen_and_serv_op.py
+++ b/python/paddle/fluid/tests/unittests/test_listen_and_serv_op.py
@@ -12,7 +12,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from dist_test_utils import *
+import os
+from dist_test_utils import remove_ps_flag, silentremove
 
 silentremove("test_handle_signal_in_serv_op.flag")
 silentremove("test_list_and_serv_run_empty_optimize_block.flag")
diff --git a/python/paddle/profiler/profiler_statistic.py b/python/paddle/profiler/profiler_statistic.py
index d4788c58fe144e1e46cee283c1c246e416dadff1..c0dc7fea44379775e7dbe27f6a9546d151f1e8bb 100755
--- a/python/paddle/profiler/profiler_statistic.py
+++ b/python/paddle/profiler/profiler_statistic.py
@@ -17,7 +17,7 @@ import re
 
 from paddle.fluid.core import TracerEventType, TracerMemEventType
 
-from .statistic_helper import *
+from .statistic_helper import intersection_ranges, merge_ranges, merge_self_ranges, sum_ranges
 
 _AllTracerEventType = [
     TracerEventType.Operator, TracerEventType.Dataloader,