diff --git a/configs/mmdet/instance-seg/instance-seg_rtmdet-ins_onnxruntime_static-640x640.py b/configs/mmdet/instance-seg/instance-seg_rtmdet-ins_onnxruntime_static-640x640.py
new file mode 100644
index 0000000000..51fcdb3185
--- /dev/null
+++ b/configs/mmdet/instance-seg/instance-seg_rtmdet-ins_onnxruntime_static-640x640.py
@@ -0,0 +1,11 @@
+_base_ = [
+    '../_base_/base_instance-seg_static.py',
+    '../../_base_/backends/onnxruntime.py'
+]
+
+# Notice: Do not set input_shape in onnx_config!
+# This will result in an incorrect scale_factor!
+# The input shape will be automatically inferred
+# from the model's test_pipeline config.
+onnx_config = dict(input_shape=None)
+codebase_config = dict(post_processing=dict(export_postprocess_mask=True))
diff --git a/configs/mmdet/instance-seg/instance-seg_rtmdet-ins_tensorrt_static-640x640.py b/configs/mmdet/instance-seg/instance-seg_rtmdet-ins_tensorrt_static-640x640.py
new file mode 100644
index 0000000000..0dc63f9e8e
--- /dev/null
+++ b/configs/mmdet/instance-seg/instance-seg_rtmdet-ins_tensorrt_static-640x640.py
@@ -0,0 +1,21 @@
+_base_ = [
+    '../_base_/base_instance-seg_static.py',
+    '../../_base_/backends/tensorrt.py'
+]
+
+# Notice: Do not set input_shape in onnx_config!
+# This will result in an incorrect scale_factor!
+# The input shape will be automatically inferred
+# from the model's test_pipeline config.
+onnx_config = dict(input_shape=None)
+codebase_config = dict(post_processing=dict(export_postprocess_mask=True))
+backend_config = dict(
+    common_config=dict(max_workspace_size=1 << 30),
+    model_inputs=[
+        dict(
+            input_shapes=dict(
+                input=dict(
+                    min_shape=[1, 3, 640, 640],
+                    opt_shape=[1, 3, 640, 640],
+                    max_shape=[1, 3, 640, 640])))
+    ])
diff --git a/mmdeploy/codebase/mmdet/deploy/object_detection_model.py b/mmdeploy/codebase/mmdet/deploy/object_detection_model.py
index fabff4108d..f31084acc9 100644
--- a/mmdeploy/codebase/mmdet/deploy/object_detection_model.py
+++ b/mmdeploy/codebase/mmdet/deploy/object_detection_model.py
@@ -1,4 +1,5 @@
 # Copyright (c) OpenMMLab. All rights reserved.
+import math
 from functools import partial
 from typing import Any, List, Optional, Sequence, Tuple, Union
 
@@ -255,7 +256,13 @@ def forward(self,
                 # avoid to resize masks with zero dim
                 if rescale and masks.shape[0] != 0:
                     masks = torch.nn.functional.interpolate(
-                        masks.unsqueeze(0), size=(ori_h, ori_w))
+                        masks.unsqueeze(0),
+                        size=[
+                            math.ceil(masks.shape[-2] /
+                                      img_metas[i]['scale_factor'][0]),
+                            math.ceil(masks.shape[-1] /
+                                      img_metas[i]['scale_factor'][1])
+                        ])[..., :ori_h, :ori_w]
                     masks = masks.squeeze(0)
                 if masks.dtype != bool:
                     masks = masks >= 0.5
diff --git a/mmdeploy/codebase/mmdet/models/dense_heads/__init__.py b/mmdeploy/codebase/mmdet/models/dense_heads/__init__.py
index ecbb3bc8b0..126e7b21f9 100644
--- a/mmdeploy/codebase/mmdet/models/dense_heads/__init__.py
+++ b/mmdeploy/codebase/mmdet/models/dense_heads/__init__.py
@@ -7,6 +7,7 @@
 from . import reppoints_head  # noqa: F401,F403
 from . import rpn_head  # noqa: F401,F403
 from . import rtmdet_head  # noqa: F401,F403
+from . import rtmdet_ins_head  # noqa: F401,F403
 from . import solo_head  # noqa: F401,F403
 from . import yolo_head  # noqa: F401,F403
 from . import yolox_head  # noqa: F401,F403
diff --git a/mmdeploy/codebase/mmdet/models/dense_heads/rtmdet_ins_head.py b/mmdeploy/codebase/mmdet/models/dense_heads/rtmdet_ins_head.py
new file mode 100644
index 0000000000..416abbbea6
--- /dev/null
+++ b/mmdeploy/codebase/mmdet/models/dense_heads/rtmdet_ins_head.py
@@ -0,0 +1,308 @@
+# Copyright (c) OpenMMLab. All rights reserved.
+from typing import List, Optional
+
+import torch
+import torch.nn.functional as F
+from mmengine.config import ConfigDict
+from packaging import version
+from torch import Tensor
+
+from mmdeploy.codebase.mmdet import get_post_processing_params
+from mmdeploy.core import FUNCTION_REWRITER
+from mmdeploy.mmcv.ops import ONNXNMSop, TRTBatchedNMSop
+
+
+@FUNCTION_REWRITER.register_rewriter(
+    func_name='mmdet.models.dense_heads.rtmdet_ins_head.'
+    'RTMDetInsHead.predict_by_feat')
+def rtmdet_ins_head__predict_by_feat(
+        self,
+        cls_scores: List[Tensor],
+        bbox_preds: List[Tensor],
+        kernel_preds: List[Tensor],
+        mask_feat: Tensor,
+        score_factors: Optional[List[Tensor]] = None,
+        batch_img_metas: Optional[List[dict]] = None,
+        cfg: Optional[ConfigDict] = None,
+        rescale: bool = False,
+        with_nms: bool = True):
+    """Rewrite `predict_by_feat` of `RTMDet-Ins` for default backend.
+    Rewrite this function to deploy model, transform network output for a
+    batch into bbox predictions.
+    Args:
+        ctx: Context that contains original meta information.
+        cls_scores (list[Tensor]): Classification scores for all
+            scale levels, each is a 4D-tensor, has shape
+            (batch_size, num_priors * num_classes, H, W).
+        bbox_preds (list[Tensor]): Box energies / deltas for all
+            scale levels, each is a 4D-tensor, has shape
+            (batch_size, num_priors * 4, H, W).
+        batch_img_metas (list[dict], Optional): Batch image meta info.
+            Defaults to None.
+        cfg (ConfigDict, optional): Test / postprocessing
+            configuration, if None, test_cfg would be used.
+            Defaults to None.
+        rescale (bool): If True, return boxes in original image space.
+            Defaults to False.
+        with_nms (bool): If True, do nms before return boxes.
+            Defaults to True.
+    Returns:
+        tuple[Tensor, Tensor]: The first item is an (N, num_box, 5) tensor,
+            where 5 represent (tl_x, tl_y, br_x, br_y, score), N is batch
+            size and the score between 0 and 1. The shape of the second
+            tensor in the tuple is (N, num_box), and each element
+            represents the class label of the corresponding box.
+    """
+    assert len(cls_scores) == len(bbox_preds)
+    device = cls_scores[0].device
+    cfg = self.test_cfg if cfg is None else cfg
+    batch_size = bbox_preds[0].shape[0]
+    featmap_sizes = [cls_score.shape[2:] for cls_score in cls_scores]
+    mlvl_priors = self.prior_generator.grid_priors(
+        featmap_sizes, device=device, with_stride=True)
+
+    flatten_cls_scores = [
+        cls_score.permute(0, 2, 3, 1).reshape(batch_size, -1,
+                                              self.cls_out_channels)
+        for cls_score in cls_scores
+    ]
+    flatten_bbox_preds = [
+        bbox_pred.permute(0, 2, 3, 1).reshape(batch_size, -1, 4)
+        for bbox_pred in bbox_preds
+    ]
+    flatten_kernel_preds = [
+        kernel_pred.permute(0, 2, 3, 1).reshape(batch_size, -1,
+                                                self.num_gen_params)
+        for kernel_pred in kernel_preds
+    ]
+    flatten_cls_scores = torch.cat(flatten_cls_scores, dim=1).sigmoid()
+    flatten_bbox_preds = torch.cat(flatten_bbox_preds, dim=1)
+    flatten_kernel_preds = torch.cat(flatten_kernel_preds, dim=1)
+    priors = torch.cat(mlvl_priors)
+    tl_x = (priors[..., 0] - flatten_bbox_preds[..., 0])
+    tl_y = (priors[..., 1] - flatten_bbox_preds[..., 1])
+    br_x = (priors[..., 0] + flatten_bbox_preds[..., 2])
+    br_y = (priors[..., 1] + flatten_bbox_preds[..., 3])
+    bboxes = torch.stack([tl_x, tl_y, br_x, br_y], -1)
+    # directly multiply score factor and feed to nms
+    max_scores, _ = torch.max(flatten_cls_scores, 1)
+    mask = max_scores >= cfg.score_thr
+    scores = flatten_cls_scores.where(mask, flatten_cls_scores.new_zeros(1))
+
+    ctx = FUNCTION_REWRITER.get_context()
+    deploy_cfg = ctx.cfg
+    post_params = get_post_processing_params(deploy_cfg)
+    max_output_boxes_per_class = post_params.max_output_boxes_per_class
+    iou_threshold = cfg.nms.get('iou_threshold', post_params.iou_threshold)
+    score_threshold = cfg.get('score_thr', post_params.score_threshold)
+    pre_top_k = post_params.pre_top_k
+    keep_top_k = cfg.get('max_per_img', post_params.keep_top_k)
+    mask_thr_binary = cfg.get('mask_thr_binary', 0.5)
+
+    return _nms_with_mask_static(self, priors, bboxes, scores,
+                                 flatten_kernel_preds, mask_feat,
+                                 max_output_boxes_per_class, iou_threshold,
+                                 score_threshold, pre_top_k, keep_top_k,
+                                 mask_thr_binary)
+
+
+def _nms_with_mask_static(self,
+                          priors: Tensor,
+                          boxes: Tensor,
+                          scores: Tensor,
+                          kernels: Tensor,
+                          mask_feats: Tensor,
+                          max_output_boxes_per_class: int = 1000,
+                          iou_threshold: float = 0.5,
+                          score_threshold: float = 0.05,
+                          pre_top_k: int = -1,
+                          keep_top_k: int = -1,
+                          mask_thr_binary: float = 0.5):
+    """Wrapper for `multiclass_nms` with ONNXRuntime.
+    Args:
+        ctx (ContextCaller): The context with additional information.
+        boxes (Tensor): The bounding boxes of shape [N, num_boxes, 4].
+        scores (Tensor): The detection scores of shape
+            [N, num_boxes, num_classes].
+        max_output_boxes_per_class (int): Maximum number of output
+            boxes per class of nms. Defaults to 1000.
+        iou_threshold (float): IOU threshold of nms. Defaults to 0.5.
+        score_threshold (float): score threshold of nms.
+            Defaults to 0.05.
+        pre_top_k (int): Number of top K boxes to keep before nms.
+            Defaults to -1.
+        keep_top_k (int): Number of top K boxes to keep after nms.
+            Defaults to -1.
+    Returns:
+        tuple[Tensor, Tensor]: (dets, labels), `dets` of shape [N, num_det, 5]
+            and `labels` of shape [N, num_det].
+    """
+    if version.parse(torch.__version__) < version.parse('1.13.0'):
+        max_output_boxes_per_class = torch.LongTensor(
+            [max_output_boxes_per_class])
+    iou_threshold = torch.tensor([iou_threshold], dtype=torch.float32)
+    score_threshold = torch.tensor([score_threshold], dtype=torch.float32)
+
+    # pre topk
+    if pre_top_k > 0:
+        max_scores, _ = scores.max(-1)
+        _, topk_inds = max_scores.squeeze(0).topk(pre_top_k)
+        boxes = boxes[:, topk_inds, :]
+        scores = scores[:, topk_inds, :]
+        kernels = kernels[:, topk_inds, :]
+        priors = priors[topk_inds, :]
+
+    scores = scores.permute(0, 2, 1)
+    selected_indices = ONNXNMSop.apply(boxes, scores,
+                                       max_output_boxes_per_class,
+                                       iou_threshold, score_threshold)
+
+    cls_inds = selected_indices[:, 1]
+    box_inds = selected_indices[:, 2]
+
+    scores = scores[:, cls_inds, box_inds].unsqueeze(2)
+    boxes = boxes[:, box_inds, ...]
+    kernels = kernels[:, box_inds, :]
+    priors = priors[box_inds, :]
+    dets = torch.cat([boxes, scores], dim=2)
+    labels = cls_inds.unsqueeze(0)
+
+    # pad
+    dets = torch.cat((dets, dets.new_zeros((1, 1, 5))), 1)
+    labels = torch.cat((labels, labels.new_zeros((1, 1))), 1)
+
+    # topk or sort
+    is_use_topk = keep_top_k > 0 and \
+        (torch.onnx.is_in_onnx_export() or keep_top_k < dets.shape[1])
+    if is_use_topk:
+        _, topk_inds = dets[:, :, -1].topk(keep_top_k, dim=1)
+    else:
+        _, topk_inds = dets[:, :, -1].sort(dim=1, descending=True)
+    topk_inds = topk_inds.squeeze(0)
+    dets = dets[:, topk_inds, ...]
+    labels = labels[:, topk_inds, ...]
+    kernels = kernels[:, topk_inds, ...]
+    priors = priors[topk_inds, ...]
+    mask_logits = _mask_predict_by_feat_single(self, mask_feats, kernels[0],
+                                               priors)
+    stride = self.prior_generator.strides[0][0]
+    mask_logits = F.interpolate(
+        mask_logits.unsqueeze(0), scale_factor=stride, mode='bilinear')
+    masks = mask_logits.sigmoid()
+    return dets, labels, masks
+
+
+@FUNCTION_REWRITER.register_rewriter(
+    func_name='mmdeploy.codebase.mmdet.models.'
+    'dense_heads.rtmdet_ins_head._nms_with_mask_static',
+    backend='tensorrt')
+def _nms_with_mask_static__tensorrt(self,
+                                    priors: Tensor,
+                                    boxes: Tensor,
+                                    scores: Tensor,
+                                    kernels: Tensor,
+                                    mask_feats: Tensor,
+                                    max_output_boxes_per_class: int = 1000,
+                                    iou_threshold: float = 0.5,
+                                    score_threshold: float = 0.05,
+                                    pre_top_k: int = -1,
+                                    keep_top_k: int = -1,
+                                    mask_thr_binary: float = 0.5):
+    """Wrapper for `multiclass_nms` with TensorRT.
+    Args:
+        ctx (ContextCaller): The context with additional information.
+        boxes (Tensor): The bounding boxes of shape [N, num_boxes, 4].
+        scores (Tensor): The detection scores of shape
+            [N, num_boxes, num_classes].
+        max_output_boxes_per_class (int): Maximum number of output
+            boxes per class of nms. Defaults to 1000.
+        iou_threshold (float): IOU threshold of nms. Defaults to 0.5.
+        score_threshold (float): score threshold of nms.
+            Defaults to 0.05.
+        pre_top_k (int): Number of top K boxes to keep before nms.
+            Defaults to -1.
+        keep_top_k (int): Number of top K boxes to keep after nms.
+            Defaults to -1.
+    Returns:
+        tuple[Tensor, Tensor]: (dets, labels), `dets` of shape [N, num_det, 5]
+            and `labels` of shape [N, num_det].
+    """
+    boxes = boxes if boxes.dim() == 4 else boxes.unsqueeze(2)
+    keep_top_k = max_output_boxes_per_class if keep_top_k < 0 else min(
+        max_output_boxes_per_class, keep_top_k)
+    dets, labels, inds = TRTBatchedNMSop.apply(boxes, scores,
+                                               int(scores.shape[-1]),
+                                               pre_top_k, keep_top_k,
+                                               iou_threshold, score_threshold,
+                                               -1, True)
+    # inds shape: (batch, n_boxes)
+    # retain shape info
+    batch_size = boxes.size(0)
+
+    dets_shape = dets.shape
+    label_shape = labels.shape
+    dets = dets.reshape([batch_size, *dets_shape[1:]])
+    labels = labels.reshape([batch_size, *label_shape[1:]])
+    kernels = kernels[:, inds.reshape(-1), ...]
+    priors = priors[inds.reshape(-1), ...]
+    mask_logits = _mask_predict_by_feat_single(self, mask_feats, kernels[0],
+                                               priors)
+    stride = self.prior_generator.strides[0][0]
+    mask_logits = F.interpolate(
+        mask_logits.unsqueeze(0), scale_factor=stride, mode='bilinear')
+    masks = mask_logits.sigmoid()
+    return dets, labels, masks
+
+
+def _mask_predict_by_feat_single(self, mask_feat, kernels, priors):
+    """decode mask with dynamic conv."""
+    num_inst = priors.shape[0]
+    h, w = mask_feat.size()[-2:]
+    if num_inst < 1:
+        return torch.empty(
+            size=(num_inst, h, w),
+            dtype=mask_feat.dtype,
+            device=mask_feat.device)
+    if len(mask_feat.shape) < 4:
+        mask_feat.unsqueeze(0)
+    coord = self.prior_generator.single_level_grid_priors(
+        (h, w), level_idx=0).reshape(1, -1, 2).to(mask_feat.device)
+    num_inst = priors.shape[0]
+    points = priors[:, :2].reshape(-1, 1, 2)
+    strides = priors[:, 2:].reshape(-1, 1, 2)
+    relative_coord = (points - coord).permute(0, 2, 1) / (
+        strides[..., 0].reshape(-1, 1, 1) * 8)
+    relative_coord = relative_coord.reshape(num_inst, 2, h, w)
+
+    mask_feat = torch.cat(
+        [relative_coord, mask_feat.repeat(num_inst, 1, 1, 1)], dim=1)
+    weights, biases = _parse_dynamic_params(self, kernels)
+
+    n_layers = len(weights)
+    x = mask_feat.flatten(2)
+    for i, (weight, bias) in enumerate(zip(weights, biases)):
+        # replace dynamic conv with bmm
+        x = torch.bmm(weight, x)
+        x = x + bias[:, :, None]
+        if i < n_layers - 1:
+            x = x.clamp_(min=0)
+    x = x.reshape(num_inst, h, w)
+    return x
+
+
+def _parse_dynamic_params(self, flatten_kernels):
+    """split kernel head prediction to conv weight and bias."""
+    n_inst = flatten_kernels.size(0)
+    n_layers = len(self.weight_nums)
+    params_splits = list(
+        torch.split_with_sizes(
+            flatten_kernels, self.weight_nums + self.bias_nums, dim=1))
+    weight_splits = params_splits[:n_layers]
+    bias_splits = params_splits[n_layers:]
+    for idx in range(n_layers):
+        if idx < n_layers - 1:
+            weight_splits[idx] = weight_splits[idx].reshape(
+                n_inst, self.dyconv_channels, -1)
+        else:
+            weight_splits[idx] = weight_splits[idx].reshape(n_inst, 1, -1)
+    return weight_splits, bias_splits