diff --git a/model_zoo/wide_and_deep/src/__init__.py b/model_zoo/wide_and_deep/src/__init__.py
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diff --git a/model_zoo/wide_and_deep/src/wide_and_deep.py b/model_zoo/wide_and_deep/src/wide_and_deep.py
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+++ b/model_zoo/wide_and_deep/src/wide_and_deep.py
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+# Copyright 2020 Huawei Technologies Co., Ltd
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# ============================================================================
+"""wide and deep model"""
+from mindspore import nn
+from mindspore import Tensor, Parameter, ParameterTuple
+import mindspore.common.dtype as mstype
+from mindspore.ops import functional as F
+from mindspore.ops import composite as C
+from mindspore.ops import operations as P
+# from mindspore.nn import Dropout
+from mindspore.nn.optim import Adam, FTRL
+# from mindspore.nn.metrics import Metric
+from mindspore.common.initializer import Uniform, initializer
+# from mindspore.train.callback import ModelCheckpoint, CheckpointConfig
+import numpy as np
+
+np_type = np.float32
+ms_type = mstype.float32
+
+
+def init_method(method, shape, name, max_val=1.0):
+    '''
+    parameter init method
+    '''
+    if method in ['uniform']:
+        params = Parameter(initializer(
+            Uniform(max_val), shape, ms_type), name=name)
+    elif method == "one":
+        params = Parameter(initializer("ones", shape, ms_type), name=name)
+    elif method == 'zero':
+        params = Parameter(initializer("zeros", shape, ms_type), name=name)
+    elif method == "normal":
+        params = Parameter(Tensor(np.random.normal(
+            loc=0.0, scale=0.01, size=shape).astype(dtype=np_type)), name=name)
+    return params
+
+
+def init_var_dict(init_args, in_vars):
+    '''
+    var init function
+    '''
+    var_map = {}
+    _, _max_val = init_args
+    for _, iterm in enumerate(in_vars):
+        key, shape, method = iterm
+        if key not in var_map.keys():
+            if method in ['random', 'uniform']:
+                var_map[key] = Parameter(initializer(
+                    Uniform(_max_val), shape, ms_type), name=key)
+            elif method == "one":
+                var_map[key] = Parameter(initializer(
+                    "ones", shape, ms_type), name=key)
+            elif method == "zero":
+                var_map[key] = Parameter(initializer(
+                    "zeros", shape, ms_type), name=key)
+            elif method == 'normal':
+                var_map[key] = Parameter(Tensor(np.random.normal(
+                    loc=0.0, scale=0.01, size=shape).astype(dtype=np_type)), name=key)
+    return var_map
+
+
+class DenseLayer(nn.Cell):
+    """
+    Dense Layer for Deep Layer of WideDeep Model;
+    Containing: activation, matmul, bias_add;
+    Args:
+    """
+
+    def __init__(self, input_dim, output_dim, weight_bias_init, act_str,
+                 keep_prob=0.7, scale_coef=1.0, convert_dtype=True):
+        super(DenseLayer, self).__init__()
+        weight_init, bias_init = weight_bias_init
+        self.weight = init_method(
+            weight_init, [input_dim, output_dim], name="weight")
+        self.bias = init_method(bias_init, [output_dim], name="bias")
+        self.act_func = self._init_activation(act_str)
+        self.matmul = P.MatMul(transpose_b=False)
+        self.bias_add = P.BiasAdd()
+        self.cast = P.Cast()
+        #self.dropout = Dropout(keep_prob=keep_prob)
+        self.mul = P.Mul()
+        self.realDiv = P.RealDiv()
+        self.scale_coef = scale_coef
+        self.convert_dtype = convert_dtype
+
+    def _init_activation(self, act_str):
+        act_str = act_str.lower()
+        if act_str == "relu":
+            act_func = P.ReLU()
+        elif act_str == "sigmoid":
+            act_func = P.Sigmoid()
+        elif act_str == "tanh":
+            act_func = P.Tanh()
+        return act_func
+
+    def construct(self, x):
+        x = self.act_func(x)
+        # if self.training:
+        #    x = self.dropout(x)
+        x = self.mul(x, self.scale_coef)
+        if self.convert_dtype:
+            x = self.cast(x, mstype.float16)
+            weight = self.cast(self.weight, mstype.float16)
+            wx = self.matmul(x, weight)
+            wx = self.cast(wx, mstype.float32)
+        else:
+            wx = self.matmul(x, self.weight)
+        wx = self.realDiv(wx, self.scale_coef)
+        output = self.bias_add(wx, self.bias)
+        return output
+
+
+class WideDeepModel(nn.Cell):
+    """
+        From paper: " Wide & Deep Learning for Recommender Systems"
+        Args:
+            config (Class): The default config of Wide&Deep
+    """
+
+    def __init__(self, config):
+        super(WideDeepModel, self).__init__()
+        self.batch_size = config.batch_size
+        self.field_size = config.field_size
+        self.vocab_size = config.vocab_size
+        self.emb_dim = config.emb_dim
+        self.deep_layer_args = config.deep_layer_args
+        self.deep_layer_dims_list, self.deep_layer_act = self.deep_layer_args
+        self.init_args = config.init_args
+        self.weight_init, self.bias_init = config.weight_bias_init
+        self.weight_bias_init = config.weight_bias_init
+        self.emb_init = config.emb_init
+        self.drop_out = config.dropout_flag
+        self.keep_prob = config.keep_prob
+        self.deep_input_dims = self.field_size * self.emb_dim
+        self.layer_dims = self.deep_layer_dims_list + [1]
+        self.all_dim_list = [self.deep_input_dims] + self.layer_dims
+
+        init_acts = [('Wide_w', [self.vocab_size, 1], self.emb_init),
+                     ('V_l2', [self.vocab_size, self.emb_dim], self.emb_init),
+                     ('Wide_b', [1], self.emb_init)]
+        var_map = init_var_dict(self.init_args, init_acts)
+        self.wide_w = var_map["Wide_w"]
+        self.wide_b = var_map["Wide_b"]
+        self.embedding_table = var_map["V_l2"]
+        self.dense_layer_1 = DenseLayer(self.all_dim_list[0],
+                                        self.all_dim_list[1],
+                                        self.weight_bias_init,
+                                        self.deep_layer_act, convert_dtype=True)
+        self.dense_layer_2 = DenseLayer(self.all_dim_list[1],
+                                        self.all_dim_list[2],
+                                        self.weight_bias_init,
+                                        self.deep_layer_act, convert_dtype=True)
+        self.dense_layer_3 = DenseLayer(self.all_dim_list[2],
+                                        self.all_dim_list[3],
+                                        self.weight_bias_init,
+                                        self.deep_layer_act, convert_dtype=True)
+        self.dense_layer_4 = DenseLayer(self.all_dim_list[3],
+                                        self.all_dim_list[4],
+                                        self.weight_bias_init,
+                                        self.deep_layer_act, convert_dtype=True)
+        self.dense_layer_5 = DenseLayer(self.all_dim_list[4],
+                                        self.all_dim_list[5],
+                                        self.weight_bias_init,
+                                        self.deep_layer_act, convert_dtype=True)
+
+        self.gather_v2 = P.GatherV2()
+        self.mul = P.Mul()
+        self.reduce_sum = P.ReduceSum(keep_dims=False)
+        self.reshape = P.Reshape()
+        self.square = P.Square()
+        self.shape = P.Shape()
+        self.tile = P.Tile()
+        self.concat = P.Concat(axis=1)
+        self.cast = P.Cast()
+
+    def construct(self, id_hldr, wt_hldr):
+        """
+        Args:
+            id_hldr: batch ids;
+            wt_hldr: batch weights;
+        """
+        mask = self.reshape(wt_hldr, (self.batch_size, self.field_size, 1))
+        # Wide layer
+        wide_id_weight = self.gather_v2(self.wide_w, id_hldr, 0)
+        wx = self.mul(wide_id_weight, mask)
+        wide_out = self.reshape(self.reduce_sum(wx, 1) + self.wide_b, (-1, 1))
+        # Deep layer
+        deep_id_embs = self.gather_v2(self.embedding_table, id_hldr, 0)
+        vx = self.mul(deep_id_embs, mask)
+        deep_in = self.reshape(vx, (-1, self.field_size * self.emb_dim))
+        deep_in = self.dense_layer_1(deep_in)
+        deep_in = self.dense_layer_2(deep_in)
+        deep_in = self.dense_layer_3(deep_in)
+        deep_in = self.dense_layer_4(deep_in)
+        deep_out = self.dense_layer_5(deep_in)
+        out = wide_out + deep_out
+        return out, self.embedding_table
+
+
+class NetWithLossClass(nn.Cell):
+
+    """"
+    Provide WideDeep training loss through network.
+    Args:
+        network (Cell): The training network
+        config (Class): WideDeep config
+    """
+
+    def __init__(self, network, config):
+        super(NetWithLossClass, self).__init__(auto_prefix=False)
+        self.network = network
+        self.l2_coef = config.l2_coef
+        self.loss = P.SigmoidCrossEntropyWithLogits()
+        self.square = P.Square()
+        self.reduceMean_false = P.ReduceMean(keep_dims=False)
+        self.reduceSum_false = P.ReduceSum(keep_dims=False)
+
+    def construct(self, batch_ids, batch_wts, label):
+        predict, embedding_table = self.network(batch_ids, batch_wts)
+        log_loss = self.loss(predict, label)
+        wide_loss = self.reduceMean_false(log_loss)
+        l2_loss_v = self.reduceSum_false(self.square(embedding_table)) / 2
+        deep_loss = self.reduceMean_false(log_loss) + self.l2_coef * l2_loss_v
+
+        return wide_loss, deep_loss
+
+
+class IthOutputCell(nn.Cell):
+    def __init__(self, network, output_index):
+        super(IthOutputCell, self).__init__()
+        self.network = network
+        self.output_index = output_index
+
+    def construct(self, x1, x2, x3):
+        predict = self.network(x1, x2, x3)[self.output_index]
+        return predict
+
+
+class TrainStepWrap(nn.Cell):
+    """
+    Encapsulation class of WideDeep network training.
+    Append Adam and FTRL optimizers to the training network after that construct
+    function can be called to create the backward graph.
+    Args:
+        network (Cell): the training network. Note that loss function should have been added.
+        sens (Number): The adjust parameter. Default: 1000.0
+    """
+
+    def __init__(self, network, sens=1000.0):
+        super(TrainStepWrap, self).__init__()
+        self.network = network
+        self.network.set_train()
+        self.trainable_params = network.trainable_params()
+        weights_w = []
+        weights_d = []
+        for params in self.trainable_params:
+            if 'wide' in params.name:
+                weights_w.append(params)
+            else:
+                weights_d.append(params)
+        self.weights_w = ParameterTuple(weights_w)
+        self.weights_d = ParameterTuple(weights_d)
+        self.optimizer_w = FTRL(learning_rate=1e-2, params=self.weights_w,
+                                l1=1e-8, l2=1e-8, initial_accum=1.0)
+        self.optimizer_d = Adam(
+            self.weights_d, learning_rate=3.5e-4, eps=1e-8, loss_scale=sens)
+        self.hyper_map = C.HyperMap()
+        self.grad_w = C.GradOperation('grad_w', get_by_list=True,
+                                      sens_param=True)
+        self.grad_d = C.GradOperation('grad_d', get_by_list=True,
+                                      sens_param=True)
+        self.sens = sens
+        self.loss_net_w = IthOutputCell(network, output_index=0)
+        self.loss_net_d = IthOutputCell(network, output_index=1)
+
+    def construct(self, batch_ids, batch_wts, label):
+        weights_w = self.weights_w
+        weights_d = self.weights_d
+        loss_w, loss_d = self.network(batch_ids, batch_wts, label)
+        sens_w = P.Fill()(P.DType()(loss_w), P.Shape()(loss_w), self.sens)
+        sens_d = P.Fill()(P.DType()(loss_d), P.Shape()(loss_d), self.sens)
+        grads_w = self.grad_w(self.loss_net_w, weights_w)(batch_ids, batch_wts,
+                                                          label, sens_w)
+        grads_d = self.grad_d(self.loss_net_d, weights_d)(batch_ids, batch_wts,
+                                                          label, sens_d)
+        return F.depend(loss_w, self.optimizer_w(grads_w)), F.depend(loss_d,
+                                                                     self.optimizer_d(grads_d))
+
+
+class PredictWithSigmoid(nn.Cell):
+    def __init__(self, network):
+        super(PredictWithSigmoid, self).__init__()
+        self.network = network
+        self.sigmoid = P.Sigmoid()
+
+    def construct(self, batch_ids, batch_wts, labels):
+        logits, _, _, = self.network(batch_ids, batch_wts)
+        pred_probs = self.sigmoid(logits)
+        return logits, pred_probs, labels