diff --git a/onnxruntime/core/providers/vitisai/imp/register_xir_ops.cc b/onnxruntime/core/providers/vitisai/imp/register_xir_ops.cc
index 7cc42983f3..544e183506 100644
--- a/onnxruntime/core/providers/vitisai/imp/register_xir_ops.cc
+++ b/onnxruntime/core/providers/vitisai/imp/register_xir_ops.cc
@@ -26,6 +26,8 @@ static void xir_shape_infer(ONNX_NAMESPACE::InferenceContext& ctx) {
     updateOutputElemType(ctx, 0, ONNX_NAMESPACE::TensorProto::FLOAT);
   } else if (data_type->s() == "int8") {
     updateOutputElemType(ctx, 0, ONNX_NAMESPACE::TensorProto::INT8);
+  } else if (data_type->s() == "uint8") {
+    updateOutputElemType(ctx, 0, ONNX_NAMESPACE::TensorProto::UINT8);
   } else if (data_type->s() == "int32") {
     updateOutputElemType(ctx, 0, ONNX_NAMESPACE::TensorProto::INT32);
   } else if (data_type->s() == "int64") {
diff --git a/onnxruntime/core/providers/vitisai/imp/tensor_proto.cc b/onnxruntime/core/providers/vitisai/imp/tensor_proto.cc
index 73317bf520..edb14eda14 100644
--- a/onnxruntime/core/providers/vitisai/imp/tensor_proto.cc
+++ b/onnxruntime/core/providers/vitisai/imp/tensor_proto.cc
@@ -2,6 +2,7 @@
 // Licensed under the MIT License.
 #include "./tensor_proto.h"
 #include "./vai_assert.h"
+#include "core/framework/tensorprotoutils.h"
 
 #include <cstdint>
 #include <limits>
@@ -10,36 +11,14 @@ namespace vaip {
 
 gsl::span<const char> tensor_proto_as_raw(
     const ONNX_NAMESPACE::TensorProto& tensor) {
-  auto data_type = tensor.data_type();
   auto& mut_tensor = const_cast<ONNX_NAMESPACE::TensorProto&>(tensor);
-  if (tensor.has_raw_data()) {
-    return gsl::span<const char>(tensor.raw_data().data(), tensor.raw_data().size());
-  } else if (tensor.float_data_size() > 0 && data_type == ONNX_NAMESPACE::TensorProto::FLOAT) {
-    return gsl::span<const char>((char*)tensor.float_data().data(), tensor.float_data().size() * sizeof(float));
-  } else if (tensor.int32_data_size() > 0 && data_type == ONNX_NAMESPACE::TensorProto::INT32) {
-    return gsl::span<const char>((char*)tensor.int32_data().data(), tensor.int32_data().size() * sizeof(int));
-    // test case: graph_opt model #43
-  } else if (tensor.int64_data_size() > 0 && data_type == ONNX_NAMESPACE::TensorProto::INT64) {
-    return gsl::span<const char>((char*)tensor.int64_data().data(), tensor.int64_data().size() * sizeof(int64_t));
-  } else if (data_type == ONNX_NAMESPACE::TensorProto::INT8) {
-    auto size = tensor.int32_data_size();
-    assert(size > 0);
-    mut_tensor.mutable_raw_data()->resize(sizeof(char) * size);
-    char* base = &(*mut_tensor.mutable_raw_data())[0];
-    for (auto i = 0; i < size; ++i) {
-      auto value = (char)tensor.int32_data(i);
-      assert(value >= std::numeric_limits<char>::min());
-      assert(value <= std::numeric_limits<char>::max());
-      base[i] = value;
-    }
-    return gsl::span<const char>(tensor.raw_data().data(), tensor.raw_data().size());
-  } else {
-    vai_assert(false, "not support data_type");
+  if (!tensor.has_raw_data()) {
+    std::vector<uint8_t> unpacked_tensor;
+    auto s = onnxruntime::utils::UnpackInitializerData(tensor, unpacked_tensor);
+    mut_tensor.mutable_raw_data()->resize(unpacked_tensor.size());
+    memcpy(mut_tensor.mutable_raw_data()->data(), unpacked_tensor.data(), unpacked_tensor.size());
   }
-#ifndef _WIN32
   return gsl::span<const char>(tensor.raw_data().data(), tensor.raw_data().size());
-#endif
-  return gsl::span<const char>();
 }
 
 size_t tensor_proto_raw_data_size(const ONNX_NAMESPACE::TensorProto& tensor) {