diff --git a/akg b/akg
index 32af460cac1..97dc7e96c2f 160000
--- a/akg
+++ b/akg
@@ -1 +1 @@
-Subproject commit 32af460cac1bb7d76bc1fd41f5866107cfffe1b9
+Subproject commit 97dc7e96c2ffedf2e6e38310a903ffa205a6e656
diff --git a/mindspore/_extends/graph_kernel/expanders/__init__.py b/mindspore/_extends/graph_kernel/expanders/__init__.py
index ae7f988724f..9c840e9d2b7 100644
--- a/mindspore/_extends/graph_kernel/expanders/__init__.py
+++ b/mindspore/_extends/graph_kernel/expanders/__init__.py
@@ -14,43 +14,44 @@
 # ============================================================================
 """expanders init"""
 
+from .addn import AddN
 from .assign_add import AssignAdd
 from .batchnorm import BatchNorm
 from .batchnorm_grad import BatchNormGrad
 from .bias_add import BiasAdd
 from .bias_add_grad import BiasAddGrad
 from .clip_by_norm_no_div_sum import ClipByNormNoDivSum
+from .conv2d import Conv2D
 from .dropout_grad import DropoutGrad
 from .expand_dims import ExpandDims
 from .fused_adam import FusedAdam
 from .fused_adam_weight_decay import FusedAdamWeightDecay
+from .fused_mul_add import FusedMulAdd
 from .gelu import GeLU
 from .gelu_grad import GeLUGrad
 from .gkdropout import GkDropout
+from .lamb_apply_optimizer_assign import LambApplyOptimizerAssign
+from .lamb_apply_weight_assign import LambApplyWeightAssign
 from .layernorm import LayerNorm
 from .layernorm_grad import LayerNormGrad
 from .logsoftmax import LogSoftmax
 from .logsoftmax_grad import LogSoftmaxGrad
+from .matmul import BatchMatMul, MatMul
 from .maximum_grad import MaximumGrad
 from .minimum_grad import MinimumGrad
 from .reduce_mean import ReduceMean
 from .relu import ReLU
 from .relu_grad import ReluGrad
-from .softmax import Softmax
 from .sigmoid import Sigmoid
-from .sigmoid_grad import SigmoidGrad
 from .sigmoid_cross_entropy_with_logits import SigmoidCrossEntropyWithLogits
 from .sigmoid_cross_entropy_with_logits_grad import SigmoidCrossEntropyWithLogitsGrad
+from .sigmoid_grad import SigmoidGrad
+from .softmax import Softmax
 from .softmax_cross_entropy_with_logits import SoftmaxCrossEntropyWithLogits
+from .softmax_grad_ext import SoftmaxGradExt
 from .sqrt_grad import SqrtGrad
 from .square import Square
+from .square_sum_v1 import SquareSumV1
 from .squeeze import Squeeze
 from .tanh_grad import TanhGrad
 from .tile import Tile
-from .lamb_apply_optimizer_assign import LambApplyOptimizerAssign
-from .lamb_apply_weight_assign import LambApplyWeightAssign
-from .softmax_grad_ext import SoftmaxGradExt
-from .square_sum_v1 import SquareSumV1
-from .fused_mul_add import FusedMulAdd
-from .conv2d import Conv2D
-from .matmul import MatMul, BatchMatMul
diff --git a/mindspore/_extends/graph_kernel/expanders/addn.py b/mindspore/_extends/graph_kernel/expanders/addn.py
new file mode 100644
index 00000000000..b566dbd6a75
--- /dev/null
+++ b/mindspore/_extends/graph_kernel/expanders/addn.py
@@ -0,0 +1,32 @@
+# Copyright 2021 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.
+# ===========================================================================
+"""generate json desc for addn"""
+from mindspore._extends.graph_kernel.model.model import GraphKernelUnsupportedException as GKException
+from ._utils import Expander, ExpanderInfoValidator as VLD
+
+
+@VLD.check_all_formats_same
+class AddN(Expander):
+    """Expand AddN to multiple Adds"""
+
+    def _check(self):
+        if len(self.inputs) < 2:
+            raise GKException("Inputs num of AddN should be greater than 1 but got {}".format(len(self.inputs)))
+
+    def _expand(self, graph_builder):
+        result = self.inputs[0]
+        for inp in self.inputs[1:]:
+            result = graph_builder.emit('Add', [result, inp])
+        return result
diff --git a/mindspore/ccsrc/backend/optimizer/graph_kernel/graph_kernel_cluster.cc b/mindspore/ccsrc/backend/optimizer/graph_kernel/graph_kernel_cluster.cc
index 2b576b1b0b5..ec57749f9eb 100644
--- a/mindspore/ccsrc/backend/optimizer/graph_kernel/graph_kernel_cluster.cc
+++ b/mindspore/ccsrc/backend/optimizer/graph_kernel/graph_kernel_cluster.cc
@@ -53,7 +53,6 @@ std::vector<PrimitivePtr> GetClusterableOpList() {
     prim::kPrimSub,
     prim::kPrimRsqrt,
     prim::kPrimSqrt,
-    prim::kPrimAddN,
     prim::kPrimReciprocal,
     prim::kPrimTanh,
     prim::kPrimReshape,
diff --git a/mindspore/ccsrc/backend/optimizer/graph_kernel/graph_kernel_expander.cc b/mindspore/ccsrc/backend/optimizer/graph_kernel/graph_kernel_expander.cc
index 488d6c8bf11..68473856bba 100644
--- a/mindspore/ccsrc/backend/optimizer/graph_kernel/graph_kernel_expander.cc
+++ b/mindspore/ccsrc/backend/optimizer/graph_kernel/graph_kernel_expander.cc
@@ -44,6 +44,7 @@ constexpr size_t kLambWeightInputIdx = 4;
 
 std::vector<PrimitivePtr> GetExpandOps() {
   std::vector<PrimitivePtr> expand_ops = {
+    prim::kPrimAddN,
     prim::kPrimSquare,
     prim::kPrimGeLUGrad,
     prim::kPrimAssignAdd,
diff --git a/tests/st/ops/graph_kernel/test_addn.py b/tests/st/ops/graph_kernel/test_addn.py
new file mode 100644
index 00000000000..4027a51b7d8
--- /dev/null
+++ b/tests/st/ops/graph_kernel/test_addn.py
@@ -0,0 +1,67 @@
+# Copyright 2021 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.
+# ============================================================================
+
+import numpy as np
+import pytest
+import mindspore.context as context
+from mindspore import Tensor
+from mindspore.nn import Cell
+import mindspore.ops.operations as P
+
+
+class Net(Cell):
+    def __init__(self):
+        super(Net, self).__init__()
+        self.addn = P.AddN()
+
+    def construct(self, *args):
+        return self.addn(*args)
+
+
+def get_output(*tensors):
+    net = Net()
+    output = net(tensors)
+    return output
+
+
+def test_basic():
+    np.random.seed(0)
+    tensors = []
+    expect = np.array([0], np.float32)
+    for _ in range(10):
+        t = np.random.normal(0, 1, [2, 3, 4, 3]).astype(np.float32)
+        expect = t + expect
+        tensors.append(Tensor(t))
+
+    output = get_output(*tensors).asnumpy()
+
+    assert np.allclose(expect, output, 1.e-4, 1.e-7)
+
+
+@pytest.mark.level0
+@pytest.mark.platform_x86_gpu_training
+@pytest.mark.env_onecard
+def test_basic_gpu():
+    context.set_context(mode=context.GRAPH_MODE, device_target="GPU", enable_graph_kernel=True)
+    test_basic()
+
+
+@pytest.mark.level0
+@pytest.mark.platform_arm_ascend_training
+@pytest.mark.platform_x86_ascend_training
+@pytest.mark.env_onecard
+def test_basic_ascend():
+    context.set_context(mode=context.GRAPH_MODE, device_target="Ascend", enable_graph_kernel=True)
+    test_basic()