diff --git a/mace/python/tools/converter_tool/tensorflow_converter.py b/mace/python/tools/converter_tool/tensorflow_converter.py
index 1818070aa08433db815262240f641a4853f99451..8c272ac2442db86b33e9617d7cf9e05f1ebb477d 100644
--- a/mace/python/tools/converter_tool/tensorflow_converter.py
+++ b/mace/python/tools/converter_tool/tensorflow_converter.py
@@ -578,7 +578,7 @@ class TensorflowConverter(base_converter.ConverterInterface):
         axis_arg = op.arg.add()
         axis_arg.name = MaceKeyword.mace_axis_str
         axis = tf_op.inputs[-1].eval().astype(np.int32)
-        axis = 4 + axis if axis < 0 else axis
+        axis = len(op.output_shape[0].dims) + axis if axis < 0 else axis
         axis_arg.i = axis
 
         self._skip_tensor.add(tf_op.inputs[-1].name)
diff --git a/mace/python/tools/converter_tool/transformer.py b/mace/python/tools/converter_tool/transformer.py
index a6295b5280e12f5bc84654fb7c91a37954a3ccec..850519f5bcf37d57ff8134f1d8f4be4386eb902b 100644
--- a/mace/python/tools/converter_tool/transformer.py
+++ b/mace/python/tools/converter_tool/transformer.py
@@ -751,6 +751,15 @@ class Transformer(base_converter.ConverterInterface):
                                        "only support concat at "
                                        "channel dimension")
                             arg.i = 3
+                        producer = self._producer[op.input[0]]
+                        input_shape = producer.output_shape[0].dims
+                        if producer.type == MaceOp.FullyConnected.name and \
+                                len(input_shape) == 2:
+                            axis_arg = ConverterUtil.get_arg(
+                                op, MaceKeyword.mace_axis_str)
+                            if axis_arg.i == 1 \
+                                    and self._target_data_format == DataFormat.NHWC:  # noqa
+                                axis_arg.i = 3
 
             elif op.type == MaceOp.Squeeze.name:
                 for arg in op.arg:
@@ -938,7 +947,10 @@ class Transformer(base_converter.ConverterInterface):
                     input_shape = list(input_op.output_shape[0].dims)
                     input_data_format = ConverterUtil.data_format(input_op)
                     weight.dims[:] = [weight.dims[0]] + input_shape[1:]
-                    if input_data_format == DataFormat.NHWC:
+                    if len(input_shape) == 2:
+                        weight.dims[:] = weight.dims[:] + [1, 1]
+                    if input_data_format == DataFormat.NHWC and \
+                            len(input_shape) == 4:
                         self.transpose_shape(weight.dims, [0, 3, 1, 2])
 
         return False
@@ -1113,31 +1125,48 @@ class Transformer(base_converter.ConverterInterface):
         net = self._model
         filter_format = self.filter_format()
         for op in net.op:
-            # transform reshape + matmul -> fc
+            # transform input(4D) -> reshape(2D) -> matmul to fc
             # work for TensorFlow
+            if op.type == MaceOp.Reshape.name and \
+                    op.input[1] in self._consts and \
+                    len(op.output_shape[0].dims) == 2 and \
+                    filter_format == FilterFormat.HWIO:
+                input_op = self._producer[op.input[0]]
+                input_shape = input_op.output_shape[0].dims
+                # check input op
+                if len(input_shape) == 4 and \
+                        np.prod(input_shape[1:]) == op.output_shape[0].dims[1]:
+                    is_fc = True
+                    consumers = self._consumers[op.output[0]]
+                    # check matmul op
+                    for matmul_op in consumers:
+                        if matmul_op.type != MaceOp.MatMul.name:
+                            is_fc = False
+                        else:
+                            weight = self._consts[matmul_op.input[1]]
+                            if len(weight.dims) != 2 or \
+                               weight.dims[0] != op.output_shape[0].dims[1]:
+                                is_fc = False
+                    if is_fc:
+                        print 'convert reshape and matmul to fc'
+                        self.safe_remove_node(op, input_op,
+                                              remove_input_tensor=True)
+                        for matmul_op in consumers:
+                            weight = self._consts[matmul_op.input[1]]
+                            matmul_op.type = MaceOp.FullyConnected.name
+                            weight_data = np.array(weight.float_data).reshape(
+                                weight.dims)
+                            weight.dims[:] = input_shape[1:] + \
+                                [weight_data.shape[1]]
+                        return True
+
+            # transform input(2D) -> matmul to fc
             if op.type == MaceOp.MatMul.name and \
                     filter_format == FilterFormat.HWIO:
                 producer = self._producer[op.input[0]]
                 weight = self._consts[op.input[1]]
-                if len(weight.dims) == 2 \
-                    and producer.type == MaceOp.Reshape.name \
-                    and len(producer.output) == 1 \
-                    and producer.input[1] in self._consts \
-                        and len(producer.output_shape[0].dims) == 2:
-                    input_op = self._producer[producer.input[0]]
-                    input_shape = input_op.output_shape[0].dims
-                    feature_size = np.prod(input_shape[1:])
-                    self.safe_remove_node(producer, input_op,
-                                          remove_input_tensor=True)
-                    if feature_size == producer.output_shape[0].dims[1]:
-                        print 'convert reshape and matmul to fc'
-                        op.type = MaceOp.FullyConnected.name
-                        weight_data = np.array(weight.float_data).reshape(
-                            weight.dims)
-                        weight.dims[:] = input_shape[1:] + \
-                            [weight_data.shape[1]]
-                        return True
-                elif len(weight.dims) == 2 and \
+                if len(weight.dims) == 2 and \
+                        producer.type != MaceOp.Reshape.name and \
                         len(producer.output_shape[0].dims) == 2 and \
                         weight.dims[0] == producer.output_shape[0].dims[1]:
                     print 'convert matmul to fc'