diff --git a/examples/model_security/model_defenses/mnist_defense_nad.py b/examples/model_security/model_defenses/mnist_defense_nad.py
index fa49569..b662dcb 100644
--- a/examples/model_security/model_defenses/mnist_defense_nad.py
+++ b/examples/model_security/model_defenses/mnist_defense_nad.py
@@ -17,14 +17,13 @@ import os
 import numpy as np
 from mindspore import Tensor
 from mindspore import context
-from mindspore import nn
+from mindspore import nn, Model
 from mindspore.nn import SoftmaxCrossEntropyWithLogits
-from mindspore.train import Model
 from mindspore.train.callback import LossMonitor
 
 from mindarmour.adv_robustness.attacks import FastGradientSignMethod
 from mindarmour.adv_robustness.defenses import NaturalAdversarialDefense
-from mindarmour.utils.logger import LogUtil
+from mindarmour.utils import LogUtil
 
 from examples.common.networks.lenet5.lenet5_net import LeNet5
 from examples.common.dataset.data_processing import generate_mnist_dataset
diff --git a/examples/privacy/diff_privacy/lenet5_dp.py b/examples/privacy/diff_privacy/lenet5_dp.py
index d6f74e0..c112699 100644
--- a/examples/privacy/diff_privacy/lenet5_dp.py
+++ b/examples/privacy/diff_privacy/lenet5_dp.py
@@ -16,24 +16,23 @@ Training example of adaClip-mechanism differential privacy.
 """
 import os
 
-import mindspore.nn as nn
+from mindspore import nn
 from mindspore import context
+from mindspore import load_checkpoint, load_param_into_net
+from mindspore import dtype as mstype
 from mindspore.train.callback import ModelCheckpoint
 from mindspore.train.callback import CheckpointConfig
 from mindspore.train.callback import LossMonitor
-from mindspore.nn.metrics import Accuracy
-from mindspore.train.serialization import load_checkpoint, load_param_into_net
+from mindspore.nn import Accuracy
 import mindspore.dataset as ds
 import mindspore.dataset.vision.c_transforms as CV
 import mindspore.dataset.transforms.c_transforms as C
 from mindspore.dataset.vision import Inter
-import mindspore.common.dtype as mstype
-
 from mindarmour.privacy.diff_privacy import DPModel
 from mindarmour.privacy.diff_privacy import PrivacyMonitorFactory
 from mindarmour.privacy.diff_privacy import NoiseMechanismsFactory
 from mindarmour.privacy.diff_privacy import ClipMechanismsFactory
-from mindarmour.utils.logger import LogUtil
+from mindarmour.utils import LogUtil
 from examples.common.networks.lenet5.lenet5_net import LeNet5
 from lenet5_config import mnist_cfg as cfg
 
diff --git a/examples/privacy/sup_privacy/sup_privacy.py b/examples/privacy/sup_privacy/sup_privacy.py
index 0fb28b7..41587bd 100644
--- a/examples/privacy/sup_privacy/sup_privacy.py
+++ b/examples/privacy/sup_privacy/sup_privacy.py
@@ -15,27 +15,28 @@
 Training example of suppress-based privacy.
 """
 import os
+
 import mindspore.nn as nn
 from mindspore import context
 from mindspore.train.callback import ModelCheckpoint
 from mindspore.train.callback import CheckpointConfig
 from mindspore.train.callback import LossMonitor
-from mindspore.nn.metrics import Accuracy
+from mindspore.nn import Accuracy
 import mindspore.dataset as ds
 import mindspore.dataset.vision.c_transforms as CV
 import mindspore.dataset.transforms.c_transforms as C
-from mindspore.dataset.vision.utils import Inter
-import mindspore.common.dtype as mstype
-
-from examples.common.networks.lenet5.lenet5_net import LeNet5
+from mindspore.dataset.vision import Inter
+from mindspore import dtype as mstype
 
-from sup_privacy_config import mnist_cfg as cfg
 from mindarmour.privacy.sup_privacy import SuppressModel
 from mindarmour.privacy.sup_privacy import SuppressMasker
 from mindarmour.privacy.sup_privacy import SuppressPrivacyFactory
 from mindarmour.privacy.sup_privacy import MaskLayerDes
+from mindarmour.utils import LogUtil
+
+from examples.common.networks.lenet5.lenet5_net import LeNet5
+from sup_privacy_config import mnist_cfg as cfg
 
-from mindarmour.utils.logger import LogUtil
 
 LOGGER = LogUtil.get_instance()
 LOGGER.set_level('INFO')