diff --git a/src/tim/transform/layout_inference.cc b/src/tim/transform/layout_inference.cc
index b64e8b3..e2de993 100644
--- a/src/tim/transform/layout_inference.cc
+++ b/src/tim/transform/layout_inference.cc
@@ -58,6 +58,7 @@
 #include "ops/logical_layout_inference.h"
 #include "ops/arg_layout_inference.h"
 #include "ops/deconv2d_layout_inference.h"
+#include "ops/nbg_layout_inference.h"
 
 #include <algorithm>
 #include <deque>
@@ -251,10 +252,11 @@ std::vector<std::shared_ptr<vx::Tensor>> HandleLayoutInfer(
     REGIST_LAYOUT_INFERENCE(VSI_NN_OP_ARGMAX, ArgMax);
     REGIST_LAYOUT_INFERENCE(VSI_NN_OP_ARGMIN, ArgMin);
     REGIST_LAYOUT_INFERENCE(VSI_NN_OP_DECONVOLUTION, DeConv2d);
+    REGIST_LAYOUT_INFERENCE(VSI_NN_OP_NBG, Nbg);
     REGIST_LOGICAL_LAYOUT_INFERENCE(VSI_NN_OP_LOGICAL_OPS);
     REGIST_REDUCE_LAYOUT_INFERENCE(VSI_NN_OP_REDUCE);
     default:
-      VSILOGW("Op %d: Default layout inference pass.", op_id);
+      VSILOGW("Op %d: not support layout inference.", op_id);
       assert(false);
   }
   return next_tensors;
diff --git a/src/tim/transform/ops/nbg_layout_inference.h b/src/tim/transform/ops/nbg_layout_inference.h
new file mode 100644
index 0000000..cdc531e
--- /dev/null
+++ b/src/tim/transform/ops/nbg_layout_inference.h
@@ -0,0 +1,68 @@
+/****************************************************************************
+ *
+ *    Copyright (c) 2020 Vivante Corporation
+ *
+ *    Permission is hereby granted, free of charge, to any person obtaining a
+ *    copy of this software and associated documentation files (the "Software"),
+ *    to deal in the Software without restriction, including without limitation
+ *    the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ *    and/or sell copies of the Software, and to permit persons to whom the
+ *    Software is furnished to do so, subject to the following conditions:
+ *
+ *    The above copyright notice and this permission notice shall be included in
+ *    all copies or substantial portions of the Software.
+ *
+ *    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ *    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ *    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ *    FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ *    DEALINGS IN THE SOFTWARE.
+ *
+ *****************************************************************************/
+#ifndef TIM_LAYOUT_INFER_DEFAULT_LAYOUT_INFERENCE_H_
+#define TIM_LAYOUT_INFER_DEFAULT_LAYOUT_INFERENCE_H_
+
+#include "tim/vx/ops/nbg.h"
+
+#include "src/tim/transform/ops/op_layout_inference.h"
+#include "src/tim/vx/operation_private.h"
+
+namespace tim {
+namespace transform {
+class NbgLayoutInfer : public OpLayoutInfer {
+ public:
+  NbgLayoutInfer(
+      const std::shared_ptr<vx::Operation> op,
+      std::shared_ptr<layout_inference_impl::LayoutInferContext>& context)
+      : OpLayoutInfer(op, context) {}
+  // reverse any applied permute on it's input tensor
+  void OnInputs(
+      std::vector<std::shared_ptr<vx::Tensor>>& next_tensors) override {
+    ReverseInputsPermuteVector();
+
+    auto url = op_->impl()->node()->nn_param.nbg.url;
+    uint32_t input_count = op_->impl()->input_cnt_;
+    uint32_t output_count = op_->impl()->output_cnt_;
+    auto nbg = context_->infer_graph_->CreateOperation<vx::ops::NBG>(
+        url, input_count, output_count);
+
+    for (auto i_src : op_->impl()->InputsTensor()) {
+      (*nbg).BindInput(context_->GetMapedTensor(i_src));
+      auto input_pv = MakeShared(i_src->GetShape().size());
+      context_->SetPermuteVector(i_src, input_pv);
+    }
+    auto infer_out = CreateOutputsTensor(MakeShared(1));
+    (*nbg).BindOutputs(infer_out);
+    for (const auto& out : op_->impl()->OutputsTensor()) {
+      context_->SetPermuteVector(out, MakeShared(out->GetShape().size()));
+      next_tensors.push_back(out);
+    }
+  }
+};
+
+}  // namespace transform
+}  // namespace tim
+
+#endif
\ No newline at end of file