diff --git a/include/operators/reshape.h b/include/operators/reshape.h
index 66fb1bda..31cc3576 100644
--- a/include/operators/reshape.h
+++ b/include/operators/reshape.h
@@ -28,6 +28,8 @@ class ReshapeObj : public OperatorObj {
     int numInputs() const override { return 1; }
     int numOutputs() const override { return 1; }
 
+    inline Shape getShape() const { return dims; }
+
   private:
     vector<int> getWorkloadVector() const override;
     vector<int> getOpAttrVector() const override;
diff --git a/pyinfinitensor/src/pyinfinitensor/onnx.py b/pyinfinitensor/src/pyinfinitensor/onnx.py
index 1008b391..bb155a6c 100644
--- a/pyinfinitensor/src/pyinfinitensor/onnx.py
+++ b/pyinfinitensor/src/pyinfinitensor/onnx.py
@@ -450,16 +450,17 @@ def to_onnx(graph: backend.GraphHandler, name: str) -> ModelProto:
         elif ty == backend.OpType.Flatten:
             raise Exception("TODO")
         elif ty == backend.OpType.Reshape:
-            data = ctx.push_input(inputs[0])
-            # shape = context.push_data_input(
-            #     name,
-            #     "shape",
-            #     TensorProto.INT32,
-            #     shape=[len(vals)],
-            #     vals=1,
-            # )
-            # context.push_node(make_node(ty.name, [data, shape], [name], name))
-            raise Exception("TODO")
+            shape = backend.reshape_shape_of(op)
+            inputs.append(
+                ctx.push_data_input(
+                    name,
+                    "shape",
+                    TensorProto.INT32,
+                    shape=[len(shape)],
+                    vals=shape,
+                )
+            )
+            ctx.push_node(make_node(ty.name, inputs, outputs, name))
         elif ty == backend.OpType.Concat:
             axis = backend.concat_axis_of(op)
             ctx.push_node(make_node(ty.name, inputs, outputs, name, axis=axis))
diff --git a/pyinfinitensor/tests/test_onnx.py b/pyinfinitensor/tests/test_onnx.py
index d512b504..1f839256 100644
--- a/pyinfinitensor/tests/test_onnx.py
+++ b/pyinfinitensor/tests/test_onnx.py
@@ -296,20 +296,17 @@ class TestStringMethods(unittest.TestCase):
         handler = backend.GraphHandler(runtime)
         a = handler.tensor([1, 2, 3], 12)
         b = handler.tensor([1, 2, 3], 12)
-        ab = handler.tensor([1, 2, 3], 12)
         c = handler.tensor([1, 2, 3], 12)
-        abc = handler.tensor([1, 2, 3], 12)
         d = handler.tensor([1, 2, 3], 12)
-        abcd = handler.tensor([1, 2, 3], 12)
         e = handler.tensor([1, 2, 3], 12)
-        abcde = handler.tensor([1, 2, 3], 12)
 
-        handler.add(a, b, ab)
-        handler.add(ab, c, abc)
-        handler.add(abc, d, abcd)
-        handler.add(abcd, e, abcde)
+        x = handler.add(
+            handler.add(handler.add(handler.add(a, b, None), c, None), d, None), e, None
+        )
+        y = handler.tensor([3, 2, 1], 12)
+        handler.reshape(x, y, [3, 2, 1])
 
-        to_onnx(handler, "add")
+        to_onnx(handler, "test_frontend")
 
 
 if __name__ == "__main__":
diff --git a/src/ffi/ffi_infinitensor.cc b/src/ffi/ffi_infinitensor.cc
index 0ffb1b31..f979b03c 100644
--- a/src/ffi/ffi_infinitensor.cc
+++ b/src/ffi/ffi_infinitensor.cc
@@ -1,6 +1,7 @@
 #include "core/graph_handler.h"
 #include "operators/concat.h"
 #include "operators/gather.h"
+#include "operators/reshape.h"
 #include <pybind11/stl.h>
 
 #ifdef USE_CUDA
@@ -102,12 +103,18 @@ static int gather_axis_of(Operator op) {
     return reinterpret_cast<const GatherObj *>(op.get())->getAxis();
 }
 
+static Shape reshape_shape_of(Operator op) {
+    IT_ASSERT(op->getOpType() == OpType::Reshape);
+    return reinterpret_cast<const ReshapeObj *>(op.get())->getShape();
+}
+
 void init_graph_builder(py::module &m) {
 
     using Handler = GraphHandlerObj;
 
     m.def("cpu_runtime", &CpuRuntimeObj::getInstance)
         .def("tensor_dtype", &tensor_dtype)
+        .def("reshape_shape_of", &reshape_shape_of)
         .def("concat_axis_of", &concat_axis_of)
         .def("gather_axis_of", &gather_axis_of);
     py::class_<RuntimeObj, std::shared_ptr<RuntimeObj>>(m, "Runtime");