diff --git a/.dockerignore b/.dockerignore
new file mode 100644
index 0000000..0aa6667
--- /dev/null
+++ b/.dockerignore
@@ -0,0 +1,21 @@
+# VCS
+.git/
+.gitignore
+
+# Python build artifacts
+*.egg-info/
+__pycache__/
+*.py[cod]
+*.so
+build/
+dist/
+.eggs/
+
+# Packaging outputs (avoid re-bundling previous build products)
+debian-packages/
+rpm-packages/
+
+# Editor / OS
+.vscode/
+.idea/
+.DS_Store
diff --git a/.github/workflows/build-deb.yml b/.github/workflows/build-deb.yml
new file mode 100644
index 0000000..2ed930d
--- /dev/null
+++ b/.github/workflows/build-deb.yml
@@ -0,0 +1,36 @@
+name: Build Debian Packages
+
+on:
+  push:
+    tags:
+      - 'v*'
+  pull_request:
+    branches: [main]
+    paths:
+      - 'packaging/debian/**'
+      - 'flagquantum/**'
+      - 'pyproject.toml'
+      - '.github/workflows/build-deb.yml'
+  workflow_dispatch:
+
+jobs:
+  build-deb:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+        with:
+          submodules: recursive
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Build .deb
+        run: bash packaging/debian/build-helpers/build-flagquantum.sh
+
+      - name: Upload artifacts
+        uses: actions/upload-artifact@v4
+        with:
+          name: flagquantum-amd64-packages
+          path: debian-packages/*.deb
+          retention-days: 7
diff --git a/.github/workflows/build-rpm.yml b/.github/workflows/build-rpm.yml
new file mode 100644
index 0000000..c05a2b1
--- /dev/null
+++ b/.github/workflows/build-rpm.yml
@@ -0,0 +1,36 @@
+name: Build RPM Packages
+
+on:
+  push:
+    tags:
+      - 'v*'
+  pull_request:
+    branches: [main]
+    paths:
+      - 'packaging/rpm/**'
+      - 'flagquantum/**'
+      - 'pyproject.toml'
+      - '.github/workflows/build-rpm.yml'
+  workflow_dispatch:
+
+jobs:
+  build-rpm:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+        with:
+          submodules: recursive
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Build .rpm
+        run: bash packaging/rpm/build-flagquantum-rpm.sh
+
+      - name: Upload artifacts
+        uses: actions/upload-artifact@v4
+        with:
+          name: flagquantum-amd64-rpm-packages
+          path: rpm-packages/*.rpm
+          retention-days: 7
diff --git a/packaging/INSTALL.md b/packaging/INSTALL.md
new file mode 100644
index 0000000..8bd92fe
--- /dev/null
+++ b/packaging/INSTALL.md
@@ -0,0 +1,25 @@
+# Installing python3-flagquantum
+
+After `apt install python3-flagquantum` (Debian/Ubuntu) or `dnf install python3-flagquantum` (Fedora),
+install the ML runtime separately — it is intentionally **not** declared as a
+hard Depends/Requires because the distro versions are CPU-only (torch) or
+too old (triton) for GPU workloads.
+
+FlagQuantum needs PyTorch (GPU build) at runtime:
+
+```bash
+pip install --index-url https://download.pytorch.org/whl/cu128 torch==2.9.0+cu128
+```
+
+A `venv` is recommended to isolate pip-installed packages from the system
+Python:
+
+```bash
+python3 -m venv ~/.venv/flagos
+source ~/.venv/flagos/bin/activate
+# then the pip install lines above
+```
+
+Note: the distro `python3-torch` package (CPU-only build) is intentionally
+not pulled in — FlagOS workloads need a GPU build, which PyTorch upstream
+distributes via PyPI (per-CUDA-version wheels), not as a `.deb` / `.rpm`.
diff --git a/packaging/debian/build-helpers/Dockerfile.deb b/packaging/debian/build-helpers/Dockerfile.deb
new file mode 100644
index 0000000..406e255
--- /dev/null
+++ b/packaging/debian/build-helpers/Dockerfile.deb
@@ -0,0 +1,32 @@
+ARG BASE_IMAGE_VERSION=24.04
+FROM ubuntu:${BASE_IMAGE_VERSION}
+ENV DEBIAN_FRONTEND=noninteractive
+
+RUN apt-get update && apt-get install -y --no-install-recommends \
+        build-essential debhelper devscripts dpkg-dev fakeroot \
+        dh-python pybuild-plugin-pyproject \
+        python3-all python3-pip python3-setuptools python3-wheel \
+        git ca-certificates \
+        lintian \
+    && apt-get clean && rm -rf /var/lib/apt/lists/*
+
+
+COPY . /workspace/FlagQuantum
+WORKDIR /workspace/FlagQuantum
+
+RUN cp -r packaging/debian debian
+
+RUN dpkg-buildpackage -us -uc -b || \
+    { echo "=== build failed ===" >&2; \
+      find /workspace -name "*.log" -exec echo "=== {} ===" \; -exec cat {} \; 2>/dev/null || true; \
+      exit 1; }
+
+# Run lintian against the produced .deb — surface packaging warnings
+# (unused-license-paragraph, no-manual-page, missing-build-dependency, etc.)
+# in the build log without failing the build.
+RUN lintian --info --display-info /workspace/python3-flagquantum_*.deb || true
+
+RUN mkdir -p /output && \
+    find /workspace -maxdepth 1 -name "*.deb" -exec cp {} /output/ \; && \
+    find /workspace -maxdepth 1 -name "*.changes" -exec cp {} /output/ \; && \
+    ls -lh /output/
diff --git a/packaging/debian/build-helpers/build-flagquantum.sh b/packaging/debian/build-helpers/build-flagquantum.sh
new file mode 100755
index 0000000..b3ee1e3
--- /dev/null
+++ b/packaging/debian/build-helpers/build-flagquantum.sh
@@ -0,0 +1,19 @@
+#!/usr/bin/env bash
+set -euo pipefail
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+PROJECT_DIR="$(dirname "$(dirname "$(dirname "$SCRIPT_DIR")")")"
+BASE_IMAGE_VERSION="${1:-24.04}"
+IMAGE_TAG="flagquantum-deb:${BASE_IMAGE_VERSION}"
+OUTPUT_DIR="${PROJECT_DIR}/debian-packages"
+
+docker build --network=host \
+    -f "${SCRIPT_DIR}/Dockerfile.deb" \
+    --build-arg BASE_IMAGE_VERSION="$BASE_IMAGE_VERSION" \
+    -t "$IMAGE_TAG" "$PROJECT_DIR"
+
+mkdir -p "$OUTPUT_DIR"
+CID=$(docker create "$IMAGE_TAG")
+docker cp "$CID:/output/." "$OUTPUT_DIR/"
+docker rm "$CID" > /dev/null
+
+echo ""; echo ">>> Output:"; ls -lh "$OUTPUT_DIR"
diff --git a/packaging/debian/changelog b/packaging/debian/changelog
new file mode 100644
index 0000000..00ab5a4
--- /dev/null
+++ b/packaging/debian/changelog
@@ -0,0 +1,5 @@
+flagquantum (0.1.0-1) unstable; urgency=medium
+
+  * Initial Debian packaging.
+
+ -- FlagOS Contributors <contact@flagos.io>  Tue, 12 May 2026 12:00:00 +0000
diff --git a/packaging/debian/control b/packaging/debian/control
new file mode 100644
index 0000000..99290da
--- /dev/null
+++ b/packaging/debian/control
@@ -0,0 +1,23 @@
+Source: flagquantum
+Section: python
+Priority: optional
+Maintainer: FlagOS Contributors <contact@flagos.io>
+Build-Depends: debhelper-compat (= 13),
+               dh-python,
+               python3-all,
+               python3-setuptools,
+               python3-wheel,
+               pybuild-plugin-pyproject
+Standards-Version: 4.6.2
+Homepage: https://github.com/flagos-ai/FlagQuantum
+Vcs-Browser: https://github.com/flagos-ai/FlagQuantum
+Vcs-Git: https://github.com/flagos-ai/FlagQuantum.git
+Rules-Requires-Root: no
+
+Package: python3-flagquantum
+Architecture: all
+Depends: python3:any, ${misc:Depends}, python3-numpy
+# python3-torch is intentionally NOT declared. The distro 'python3-torch' is
+# CPU-only; users install matching CUDA torch via pip — see packaging/INSTALL.md.
+Description: FlagQuantum — quantum state-vector simulator for FlagOS
+ High-performance distributed quantum statevector simulator built on the FlagOS unified multi-chip backend.
diff --git a/packaging/debian/copyright b/packaging/debian/copyright
new file mode 100644
index 0000000..95096f0
--- /dev/null
+++ b/packaging/debian/copyright
@@ -0,0 +1,23 @@
+Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
+Upstream-Name: FlagQuantum
+Upstream-Contact: FlagOS Contributors <contact@flagos.io>
+Source: https://github.com/flagos-ai/FlagQuantum
+
+Files: *
+Copyright: 2024-2026 Beijing Academy of Artificial Intelligence (BAAI)
+           2024-2026 FlagQuantum contributors
+License: Apache-2.0
+
+License: Apache-2.0
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+ .
+     http://www.apache.org/licenses/LICENSE-2.0
+ .
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ .
+ On Debian systems, the full text of the Apache 2.0 License is in
+ /usr/share/common-licenses/Apache-2.0.
diff --git a/packaging/debian/rules b/packaging/debian/rules
new file mode 100755
index 0000000..e862ef8
--- /dev/null
+++ b/packaging/debian/rules
@@ -0,0 +1,31 @@
+#!/usr/bin/make -f
+export DH_VERBOSE = 1
+export PYBUILD_NAME = flagquantum
+
+%:
+	dh $@ --with python3 --buildsystem=pybuild
+
+# Smoke find_spec test (not actual import) — verifies the built
+# module lands at the expected path. Doesn't import the module
+# because module-level deps (torch, triton, cupy, ...) are install-
+# time concerns not satisfied in the build container. Catches:
+# wrong install path, missing __init__.py, dh_python install bugs.
+override_dh_auto_test:
+	@echo "=== smoke find_spec test ==="
+	# Use found_dir + break (not `&& exit 0` inside the loop) so future
+	# multi-Python builds verify every interpreter rather than stopping
+	# at the first match.
+	@found_dir=""; \
+	for d in .pybuild/cpython3_*/build; do \
+	    if [ -d "$$d/flagquantum" ]; then \
+	        found_dir="$$d"; \
+	        break; \
+	    fi; \
+	done; \
+	if [ -z "$$found_dir" ]; then \
+	    echo "ERROR: could not find a built flagquantum module"; \
+	    exit 1; \
+	fi; \
+	echo "Found build dir: $$found_dir"; \
+	PYTHONDONTWRITEBYTECODE=1 PYTHONSAFEPATH=1 PYTHONPATH="$$found_dir" python3 -c \
+	    "import importlib.util; s = importlib.util.find_spec('flagquantum'); assert s and s.origin, 'flagquantum not findable'; print('OK: flagquantum at', s.origin)"
diff --git a/packaging/debian/source/format b/packaging/debian/source/format
new file mode 100644
index 0000000..89ae9db
--- /dev/null
+++ b/packaging/debian/source/format
@@ -0,0 +1 @@
+3.0 (native)
diff --git a/packaging/rpm/build-flagquantum-rpm.sh b/packaging/rpm/build-flagquantum-rpm.sh
new file mode 100755
index 0000000..ce0df45
--- /dev/null
+++ b/packaging/rpm/build-flagquantum-rpm.sh
@@ -0,0 +1,19 @@
+#!/usr/bin/env bash
+set -euo pipefail
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+PROJECT_DIR="$(dirname "$(dirname "$SCRIPT_DIR")")"
+BASE_IMAGE_VERSION="${1:-43}"
+IMAGE_TAG="flagquantum-rpm:f${BASE_IMAGE_VERSION}"
+OUTPUT_DIR="${PROJECT_DIR}/rpm-packages"
+
+docker build --network=host \
+    -f "${SCRIPT_DIR}/dockerfiles/Dockerfile.rpm" \
+    --build-arg BASE_IMAGE_VERSION="$BASE_IMAGE_VERSION" \
+    -t "$IMAGE_TAG" "$PROJECT_DIR"
+
+mkdir -p "$OUTPUT_DIR"
+CID=$(docker create "$IMAGE_TAG")
+docker cp "$CID:/output/." "$OUTPUT_DIR/"
+docker rm "$CID" > /dev/null
+
+echo ""; echo ">>> Output:"; ls -lh "$OUTPUT_DIR"
diff --git a/packaging/rpm/dockerfiles/Dockerfile.rpm b/packaging/rpm/dockerfiles/Dockerfile.rpm
new file mode 100644
index 0000000..380fc40
--- /dev/null
+++ b/packaging/rpm/dockerfiles/Dockerfile.rpm
@@ -0,0 +1,30 @@
+ARG BASE_IMAGE=fedora
+ARG BASE_IMAGE_VERSION=43
+
+FROM ${BASE_IMAGE}:${BASE_IMAGE_VERSION}
+
+RUN dnf install -y \
+    rpm-build rpmdevtools pyproject-rpm-macros \
+    python3-devel python3-setuptools python3-wheel python3-pip \
+    && dnf clean all
+
+RUN rpmdev-setuptree
+
+COPY . /workspace/FlagQuantum
+
+RUN SPEC_VERSION=$(grep '^Version:' /workspace/FlagQuantum/packaging/rpm/specs/flagquantum.spec | awk '{print $2}') && \
+    tar czf /root/rpmbuild/SOURCES/flagquantum-${SPEC_VERSION}.tar.gz \
+        -C /workspace/FlagQuantum \
+        --exclude='./.git' \
+        --transform "s|^\./|flagquantum-${SPEC_VERSION}/|" \
+        .
+
+RUN rpmbuild -ba /workspace/FlagQuantum/packaging/rpm/specs/flagquantum.spec 2>&1 || \
+    { echo "=== build failed ==="; \
+      find /root/rpmbuild -name "*.log" -exec echo "=== {} ===" \; -exec cat {} \; 2>/dev/null || true; \
+      exit 1; }
+
+RUN mkdir -p /output && \
+    find /root/rpmbuild/RPMS  -name "*.rpm" -exec cp {} /output/ \; && \
+    find /root/rpmbuild/SRPMS -name "*.rpm" -exec cp {} /output/ \; && \
+    ls -lh /output/
diff --git a/packaging/rpm/specs/flagquantum.spec b/packaging/rpm/specs/flagquantum.spec
new file mode 100644
index 0000000..b12c7d1
--- /dev/null
+++ b/packaging/rpm/specs/flagquantum.spec
@@ -0,0 +1,55 @@
+%global debug_package %{nil}
+
+# Filter the auto-generated Requires for: torch.
+# Reason: distro torch is CPU-only; users install GPU torch via pip.
+# See packaging/INSTALL.md (or future flagos-packaging install docs) for the
+# user-side pip install incantation.
+%global __requires_exclude ^python3(\.[0-9]+)?dist\((torch)\)$
+Name:           python3-flagquantum
+Version:        0.1.0
+Release:        1%{?dist}
+Summary:        FlagQuantum — quantum state-vector simulator for FlagOS
+
+License:        Apache-2.0
+URL:            https://github.com/flagos-ai/FlagQuantum
+Source0:        %{url}/archive/refs/tags/v%{version}.tar.gz#/flagquantum-%{version}.tar.gz
+BuildArch:      noarch
+BuildRequires:  python3-devel
+BuildRequires:  python3-setuptools >= 60
+BuildRequires:  python3-wheel
+BuildRequires:  python3-pip
+BuildRequires:  pyproject-rpm-macros
+
+Requires:       python3-numpy
+
+%description
+High-performance distributed quantum statevector simulator built on the FlagOS unified multi-chip backend.
+
+%prep
+%autosetup -n flagquantum-%{version}
+
+%build
+%pyproject_wheel
+
+%install
+%pyproject_install
+%pyproject_save_files flagquantum
+
+%check
+# Smoke find_spec test (no actual import) — verifies the built module
+# lands at the expected sitelib path. Doesn't import the module so
+# missing runtime deps (torch, triton, ...) don't trip the check;
+# those are user-install-time concerns, not packaging concerns.
+# PYTHONSAFEPATH=1 keeps the cwd (the unpacked source tree, which also
+# contains flagquantum/) off sys.path, so find_spec resolves against the
+# installed copy under PYTHONPATH, not the source tree.
+PYTHONDONTWRITEBYTECODE=1 PYTHONSAFEPATH=1 \
+    PYTHONPATH=%{buildroot}%{python3_sitelib} \
+    python3 -c "import importlib.util; s = importlib.util.find_spec('flagquantum'); assert s and s.origin, 'flagquantum not findable'; print('OK: flagquantum at', s.origin)"
+
+%files -f %{pyproject_files}
+%license LICENSE
+
+%changelog
+* Wed May 13 2026 FlagOS Contributors <contact@flagos.io> - 0.1.0-1
+- Initial RPM packaging.