diff --git a/docs/en/understand_mmcv/ops.md b/docs/en/understand_mmcv/ops.md
index 9784e459b..6967467c9 100644
--- a/docs/en/understand_mmcv/ops.md
+++ b/docs/en/understand_mmcv/ops.md
@@ -40,7 +40,7 @@ We implement common ops used in detection, segmentation, etc.
 | PixelGroup                   | √   |      |     |     |        |
 | PointsInBoxes                | √   | √    |     |     |        |
 | PointsInPolygons             |     | √    |     |     |        |
-| PSAMask                      | √   | √    | √   |     |        |
+| PSAMask                      | √   | √    | √   |     | √      |
 | RotatedFeatureAlign          | √   | √    |     |     |        |
 | RoIPointPool3d               |     | √    | √   |     |        |
 | RoIPool                      |     | √    | √   |     |        |
diff --git a/docs/zh_cn/understand_mmcv/ops.md b/docs/zh_cn/understand_mmcv/ops.md
index 715b38a7f..cbfb39d3d 100644
--- a/docs/zh_cn/understand_mmcv/ops.md
+++ b/docs/zh_cn/understand_mmcv/ops.md
@@ -40,7 +40,7 @@ MMCV 提供了检测、分割等任务中常用的算子
 | PixelGroup                   | √   |      |     |     |        |
 | PointsInBoxes                | √   | √    |     |     |        |
 | PointsInPolygons             |     | √    |     |     |        |
-| PSAMask                      | √   | √    | √   |     |        |
+| PSAMask                      | √   | √    | √   |     | √      |
 | RotatedFeatureAlign          | √   | √    |     |     |        |
 | RoIPointPool3d               |     | √    | √   |     |        |
 | RoIPool                      |     | √    | √   |     |        |
diff --git a/mmcv/ops/csrc/pytorch/npu/psa_mask_npu.cpp b/mmcv/ops/csrc/pytorch/npu/psa_mask_npu.cpp
new file mode 100644
index 000000000..7fc0ad69b
--- /dev/null
+++ b/mmcv/ops/csrc/pytorch/npu/psa_mask_npu.cpp
@@ -0,0 +1,95 @@
+#include "pytorch_npu_helper.hpp"
+
+using namespace NPU_NAME_SPACE;
+using namespace std;
+
+void psamask_forward_npu(const int psa_type,
+                          const Tensor x,
+                          Tensor y,
+                          const int num,
+                          const int h_feature,
+                          const int w_feature,
+                          const int h_mask,
+                          const int w_mask,
+                          const int half_h_mask,
+                          const int half_w_mask) {
+    int64_t psa_type_i64 = psa_type;
+    int64_t num_i64 = num;
+    int64_t h_feature_i64 = h_feature;
+    int64_t w_feature_i64 = w_feature;
+    int64_t h_mask_i64 = h_mask;
+    int64_t w_mask_i64 = w_mask;
+    int64_t half_h_mask_i64 = half_h_mask;
+    int64_t half_w_mask_i64 = half_w_mask;
+    OpCommand cmd;
+    cmd.Name("PSAMask")
+        .Input(x)
+        .Output(y)
+        .Attr("psa_type", psa_type_i64)
+        .Attr("num", num_i64)
+        .Attr("h_feature", h_feature_i64)
+        .Attr("w_feature", w_feature_i64)
+        .Attr("h_mask", h_mask_i64)
+        .Attr("w_mask", w_mask_i64)
+        .Attr("half_h_mask", half_h_mask_i64)
+        .Attr("half_w_mask", half_w_mask_i64)
+        .Run();
+}
+
+void psamask_forward_impl(const int psa_type,
+                           const Tensor x,
+                           Tensor y,
+                           const int num,
+                           const int h_feature,
+                           const int w_feature,
+                           const int h_mask,
+                           const int w_mask,
+                           const int half_h_mask,
+                           const int half_w_mask);
+
+void psamask_backward_npu(const int psa_type,
+                           const Tensor y_grad,
+                           Tensor x_grad,
+                           const int num,
+                           const int h_feature,
+                           const int w_feature,
+                           const int h_mask,
+                           const int w_mask,
+                           const int half_h_mask,
+                           const int half_w_mask) {
+    int64_t psa_type_i64 = psa_type;
+    int64_t num_i64 = num;
+    int64_t h_feature_i64 = h_feature;
+    int64_t w_feature_i64 = w_feature;
+    int64_t h_mask_i64 = h_mask;
+    int64_t w_mask_i64 = w_mask;
+    int64_t half_h_mask_i64 = half_h_mask;
+    int64_t half_w_mask_i64 = half_w_mask;
+    OpCommand cmd;
+    cmd.Name("PSAMaskGrad")
+        .Input(y_grad)
+        .Output(x_grad)
+        .Attr("psa_type", psa_type_i64)
+        .Attr("num", num_i64)
+        .Attr("h_feature", h_feature_i64)
+        .Attr("w_feature", w_feature_i64)
+        .Attr("h_mask", h_mask_i64)
+        .Attr("w_mask", w_mask_i64)
+        .Attr("half_h_mask", half_h_mask_i64)
+        .Attr("half_w_mask", half_w_mask_i64)
+        .Run();
+}
+
+void psamask_backward_impl(const int psa_type,
+                            const Tensor y_grad,
+                            Tensor x_grad,
+                            const int num,
+                            const int h_feature,
+                            const int w_feature,
+                            const int h_mask,
+                            const int w_mask,
+                            const int half_h_mask,
+                            const int half_w_mask);
+
+REGISTER_NPU_IMPL(psamask_forward_impl, psamask_forward_npu);
+REGISTER_NPU_IMPL(psamask_backward_impl, psamask_backward_npu);
diff --git a/tests/test_ops/test_psa_mask.py b/tests/test_ops/test_psa_mask.py
index 8c1f3101a..b0fd86e8f 100644
--- a/tests/test_ops/test_psa_mask.py
+++ b/tests/test_ops/test_psa_mask.py
@@ -4,7 +4,7 @@ import pytest
 import torch
 import torch.nn as nn
 
-from mmcv.utils import IS_CUDA_AVAILABLE, IS_MLU_AVAILABLE
+from mmcv.utils import IS_CUDA_AVAILABLE, IS_MLU_AVAILABLE, IS_NPU_AVAILABLE
 
 
 class Loss(nn.Module):
@@ -28,7 +28,11 @@ class TestPSAMask:
         pytest.param(
             'mlu',
             marks=pytest.mark.skipif(
-                not IS_MLU_AVAILABLE, reason='requires MLU support'))
+                not IS_MLU_AVAILABLE, reason='requires MLU support')),
+        pytest.param(
+            'npu',
+            marks=pytest.mark.skipif(
+                not IS_NPU_AVAILABLE, reason='requires NPU support'))
     ])
     def test_psa_mask_collect(self, device):
         from mmcv.ops import PSAMask
@@ -76,7 +80,11 @@ class TestPSAMask:
         pytest.param(
             'mlu',
             marks=pytest.mark.skipif(
-                not IS_MLU_AVAILABLE, reason='requires MLU support'))
+                not IS_MLU_AVAILABLE, reason='requires MLU support')),
+        pytest.param(
+            'npu',
+            marks=pytest.mark.skipif(
+                not IS_NPU_AVAILABLE, reason='requires NPU support'))
     ])
     def test_psa_mask_distribute(self, device):
         from mmcv.ops import PSAMask