diff --git a/.github/workflows/OCV-Contrib-PR-4.x-O22-CANN.yaml b/.github/workflows/OCV-Contrib-PR-4.x-O22-CANN.yaml
new file mode 100644
index 00000000..baec6a18
--- /dev/null
+++ b/.github/workflows/OCV-Contrib-PR-4.x-O22-CANN.yaml
@@ -0,0 +1,120 @@
+name: OCV Contrib PR:4.x O22 CANN
+
+on:
+  pull_request:
+    branches:
+      - main
+    paths:
+       - '.github/workflows/OCV-Contrib-PR-4.x-O22-CANN.yaml'
+  workflow_call:
+
+concurrency:
+  group: OCV-Contrib-PR-4.x-O22-CANN-${{ github.ref }}
+  cancel-in-progress: true
+
+env:
+  EXTRA_CMAKE_OPTIONS: '-DBUILD_DOCS=ON -DPYTHON_DEFAULT_EXECUTABLE=/usr/bin/python3 -DOPENCV_DOWNLOAD_PATH=/home/ci/binaries_cache -DBUILD_EXAMPLES=ON -DOPENCV_ENABLE_NONFREE=ON -DWITH_CANN=ON'
+  PR_AUTHOR: ${{ github.event.pull_request.user.login }}
+  PR_AUTHOR_FORK: ${{ github.event.pull_request.head.repo.full_name }}
+  SOURCE_BRANCH_NAME: ${{ github.head_ref }}
+  TARGET_BRANCH_NAME: ${{ github.base_ref }}
+  GIT_CACHE_DOCKER: '/home/ci/git_cache'
+  OPENCV_TEST_DATA_PATH: '/home/ci/opencv_extra/testdata'
+  OPENCV_CONTRIB_DOCKER_WORKDIR: '/home/ci/opencv_contrib'
+  PARALLEL_JOBS: 8
+
+jobs:
+  BuildAndTest:
+    runs-on: opencv-cn-openeuler-ascend310-x86-64
+    defaults:
+      run:
+        shell: bash
+    container:
+      image: quay.io/opencv-ci/opencv-openeuler-22.03.sp2-ascend310:20231107
+      options: --device /dev/davinci0 --device /dev/davinci_manager --device /dev/devmm_svm --device /dev/hisi_hdc --env-file /home/opencv-cn/git_cache/proxy
+      volumes:
+        - /home/opencv-cn/git_cache:/home/ci/git_cache
+        - /home/opencv-cn/ci_cache/opencv:/home/ci/.ccache
+        - /home/opencv-cn/binaries_cache:/home/ci/binaries_cache
+        - /usr/local/dcmi:/usr/local/dcmi
+        - /usr/local/bin/npu-smi:/usr/local/bin/npu-smi
+        - /usr/local/Ascend/driver/lib64/:/usr/local/Ascend/driver/lib64/
+
+    steps:
+    - name: Brief system information
+      timeout-minutes: 60
+      run: bash ${{ env.GIT_CACHE_DOCKER }}/print_system_information.sh
+    - name: Define proper HOME path
+      timeout-minutes: 60
+      run: echo "HOME=/home/ci" >> $GITHUB_ENV
+    - name: Setup infra environment
+      timeout-minutes: 60
+      if: ${{ github.event.repository.name == 'ci-gha-workflow' }}
+      run: echo "TARGET_BRANCH_NAME=4.x" >> $GITHUB_ENV
+    - name: Setup test environment
+      if: ${{ github.event.repository.name != 'ci-gha-workflow' }}
+      run: echo "EXTRA_GTEST_OPTIONS=--skip_unstable=1" >> $GITHUB_ENV
+    - name: PR info
+      timeout-minutes: 60
+      run: |
+        echo "PR Author: ${{ env.PR_AUTHOR }}"
+        echo "PR Author fork: ${{ env.PR_AUTHOR_FORK }}"
+        echo "Source branch name: ${{ env.SOURCE_BRANCH_NAME }}"
+        echo "Target branch name: ${{ env.TARGET_BRANCH_NAME }}"
+    - name: Clean
+      timeout-minutes: 60
+      run: find ${{ env.OPENCV_CONTRIB_DOCKER_WORKDIR }} -mindepth 1 -delete
+    - name: Fetch opencv_contrib
+      timeout-minutes: 60
+      run: git clone --branch ${{ env.TARGET_BRANCH_NAME }} --reference ${{ env.GIT_CACHE_DOCKER }}/opencv_contrib.git https://github.com/opencv/opencv_contrib.git ${{ env.OPENCV_CONTRIB_DOCKER_WORKDIR }}
+    - name: Merge opencv_contrib with ${{ env.SOURCE_BRANCH_NAME }} branch
+      timeout-minutes: 60
+      if: ${{ github.event.repository.name != 'ci-gha-workflow' }}
+      run: |
+        cd ${{ env.OPENCV_CONTRIB_DOCKER_WORKDIR }}
+        git pull -v "https://github.com/${{ env.PR_AUTHOR_FORK }}" "${{ env.SOURCE_BRANCH_NAME }}"
+    - name: Clone opencv
+      timeout-minutes: 60
+      run: git clone --single-branch --branch ${{ env.TARGET_BRANCH_NAME }} --reference ${{ env.GIT_CACHE_DOCKER }}/opencv.git https://github.com/opencv/opencv.git $HOME/opencv
+    - name: Merge opencv with ${{ env.SOURCE_BRANCH_NAME }} branch
+      timeout-minutes: 60
+      if: ${{ github.event.repository.name != 'ci-gha-workflow' }}
+      run: |
+        OPENCV_FORK=$(git ls-remote --heads "https://github.com/${{ env.PR_AUTHOR }}/opencv" "${{ env.SOURCE_BRANCH_NAME }}") || true
+        if [[ ! -z "$OPENCV_FORK" ]]; then
+          echo "Merge opencv with ${{ env.SOURCE_BRANCH_NAME }} branch"
+          cd $HOME/opencv
+          git pull -v "https://github.com/${{ env.PR_AUTHOR }}/opencv" "${{ env.SOURCE_BRANCH_NAME }}"
+        else
+          echo "No merge since ${{ env.PR_AUTHOR }}/opencv does not have branch ${{ env.SOURCE_BRANCH_NAME }}"
+        fi
+    - name: Clone opencv_extra
+      timeout-minutes: 60
+      run: git clone --single-branch --branch ${{ env.TARGET_BRANCH_NAME }} --reference ${{ env.GIT_CACHE_DOCKER }}/opencv_extra.git https://github.com/opencv/opencv_extra.git $HOME/opencv_extra
+    - name: Merge opencv_extra with ${{ env.SOURCE_BRANCH_NAME }} branch
+      timeout-minutes: 60
+      if: ${{ github.event.repository.name != 'ci-gha-workflow' }}
+      run: |
+        OPENCV_EXTRA_FORK=$(git ls-remote --heads "https://github.com/${{ env.PR_AUTHOR }}/opencv_extra" "${{ env.SOURCE_BRANCH_NAME }}") || true
+        if [[ ! -z "$OPENCV_EXTRA_FORK" ]]; then
+          echo "Merge opencv_extra with ${{ env.SOURCE_BRANCH_NAME }} branch"
+          cd $HOME/opencv_extra
+          git pull -v "https://github.com/${{ env.PR_AUTHOR }}/opencv_extra" "${{ env.SOURCE_BRANCH_NAME }}"
+        else
+          echo "No merge since ${{ env.PR_AUTHOR }}/opencv_extra does not have branch ${{ env.SOURCE_BRANCH_NAME }}"
+        fi
+    - name: Configure OpenCV
+      timeout-minutes: 60
+      run: |
+        cd $HOME/build
+        cmake -G Ninja ${{ env.EXTRA_CMAKE_OPTIONS }} -DOPENCV_EXTRA_MODULES_PATH=${{ env.OPENCV_CONTRIB_DOCKER_WORKDIR }}/modules $HOME/opencv
+    - name: Build OpenCV
+      timeout-minutes: 60
+      id: build-opencv-contrib
+      run: |
+        cd $HOME/build
+        cmake --build . --target opencv_test_cannops -j ${{ env.PARALLEL_JOBS }} | tee $HOME/build/build-log.txt
+    - name: Accuracy:cannops
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv-contrib.outcome == 'success' }}
+      run: cd $HOME/build && xvfb-run -a bin/opencv_test_cannops --test_threads=${{ env.PARALLEL_JOBS }} ${{ env.EXTRA_GTEST_OPTIONS }}