diff --git a/.github/workflows/xiangshan.yml b/.github/workflows/xiangshan.yml
new file mode 100644
index 000000000..b4e943e50
--- /dev/null
+++ b/.github/workflows/xiangshan.yml
@@ -0,0 +1,125 @@
+name: XiangShan Nightly Regression
+
+on:
+  workflow_dispatch:
+  schedule:
+    # 14:00 UTC == 22:00 UTC+8
+    - cron: '00 14 * * *'
+
+jobs:
+  xiangshan-pldm-sim:
+    strategy:
+      fail-fast: false
+      matrix:
+        branch: [ kunminghu-v2, kunminghu-v3 ]
+        topo:
+          - name: single
+            num_cores: 1
+            workload: "$NOOP_HOME/ready-to-run/linux.bin"
+            ref: "$NOOP_HOME/ready-to-run/riscv64-nemu-interpreter-so"
+          - name: dual
+            num_cores: 2
+            workload: "/nfs/home/share/ci-workloads/linux-hello-smp-new/bbl.bin"
+            ref: "$NOOP_HOME/ready-to-run/riscv64-nemu-interpreter-dual-so"
+        debug_args: [ "--difftest-config ZESNHP" ]
+        config: [ DefaultConfig ]
+
+    runs-on: self-hosted
+    timeout-minutes: 720
+    name: XS-PLDM(${{ matrix.branch }}-${{ matrix.topo.name }})
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set Env
+        run: |
+          source /nfs/home/ci-runner/ci-runner-difftest/tools/env.sh
+
+      - name: Prepare XiangShan
+        run: |
+          cd $GITHUB_WORKSPACE/..
+          NOOP_HOME="$PWD/XiangShan-${{ matrix.branch }}"
+          echo "NOOP_HOME=$NOOP_HOME" >> "$GITHUB_ENV"
+          if [ ! -d "$NOOP_HOME" ]; then
+            git clone -b ${{ matrix.branch }} --single-branch https://github.com/OpenXiangShan/XiangShan.git $NOOP_HOME
+          fi
+          cd $NOOP_HOME
+          git fetch --depth=1 origin ${{ matrix.branch }}
+          git checkout ${{ matrix.branch }}
+          git reset --hard origin/${{ matrix.branch }}
+          rm -rf difftest && make init
+          rm -rf difftest && cp -r $GITHUB_WORKSPACE .
+          make clean
+
+      - name: Generate Verilog
+        run: |
+          cd $NOOP_HOME
+          make sim-verilog PLDM=1 NUM_CORES=${{ matrix.topo.num_cores }} DEBUG_ARGS="${{ matrix.debug_args }}" CONFIG=${{ matrix.config }} WITH_CHISELDB=0 WITH_CONSTANTIN=0 -j200
+
+      - name: Build SIMV
+        run: |
+          cd $NOOP_HOME
+          make simv VCS=verilator NUM_CORES=${{ matrix.topo.num_cores }} WITH_CHISELDB=0 WITH_CONSTANTIN=0 DIFFTEST_PERFCNT=1 EMU_THREADS=16 -j200
+
+      - name: Test with Linux
+        run: |
+          cd $NOOP_HOME
+          ulimit -s 32768
+          ./build/simv +workload=${{ matrix.topo.workload }} +diff=${{ matrix.topo.ref }} 2>&1 | tee pldm.log
+
+  xiangshan-fpga-sim:
+    strategy:
+      fail-fast: false
+      matrix:
+        branch: [ kunminghu-v2, kunminghu-v3 ]
+    runs-on: self-hosted
+    timeout-minutes: 720
+    name: XS-FPGA(${{ matrix.branch }})
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set Env
+        run: |
+          source /nfs/home/ci-runner/ci-runner-difftest/tools/env.sh
+
+      - name: Prepare XiangShan
+        run: |
+          cd $GITHUB_WORKSPACE/..
+          NOOP_HOME="$PWD/XiangShan-${{ matrix.branch }}"
+          echo "NOOP_HOME=$NOOP_HOME" >> "$GITHUB_ENV"
+          if [ ! -d "$NOOP_HOME" ]; then
+            git clone -b ${{ matrix.branch }} --single-branch https://github.com/OpenXiangShan/XiangShan.git $NOOP_HOME
+          fi
+          cd $NOOP_HOME
+          git fetch --depth=1 origin ${{ matrix.branch }}
+          git checkout ${{ matrix.branch }}
+          git reset --hard origin/${{ matrix.branch }}
+          rm -rf difftest && make init
+          rm -rf difftest && cp -r $GITHUB_WORKSPACE .
+          make clean
+
+      - name: Generate Verilog
+        run: |
+          cd $NOOP_HOME
+          make sim-verilog FPGA=1 DEBUG_ARGS="--difftest-config ESBIFDU" CONFIG=FpgaDiffDefaultConfig WITH_CHISELDB=0 WITH_CONSTANTIN=0 -j200
+
+      - name: Build Fpga Host
+        run: |
+          cd $NOOP_HOME
+          make -C difftest fpga-build FPGA=1 FPGA_SIM=1 DIFFTEST_PERFCNT=1 -j200
+
+      - name: Build SIMV
+        run: |
+          cd $NOOP_HOME
+          make simv VCS=verilator FPGA_SIM=1 WITH_CHISELDB=0 WITH_CONSTANTIN=0 DIFFTEST_PERFCNT=1 EMU_THREADS=16 -j200
+
+      - name: Test with Microbench
+        run: |
+          cd $NOOP_HOME
+          ulimit -s 32768
+          bash difftest/scripts/fpga_sim/cosim.sh WORKLOAD=./ready-to-run/microbench.bin DIFF=./ready-to-run/riscv64-nemu-interpreter-so | tee fpga-microbench.log
+
+      - name: Test with Linux
+        run: |
+          cd $NOOP_HOME
+          ulimit -s 32768
+          bash difftest/scripts/fpga_sim/cosim.sh WORKLOAD=./ready-to-run/linux.bin DIFF=./ready-to-run/riscv64-nemu-interpreter-so | tee fpga-linux.log