diff --git a/script/lazygit-install.sh b/script/lazygit-install.sh
new file mode 100644
index 0000000..4d9aacd
--- /dev/null
+++ b/script/lazygit-install.sh
@@ -0,0 +1,96 @@
+#!/bin/bash
+
+set -e
+
+GREEN='\033[0;32m'
+YELLOW='\033[1;33m'
+RED='\033[0;31m'
+NC='\033[0m'
+
+if command -v lazygit &>/dev/null; then
+	echo -e "${GREEN}lazygit 已安装:${NC}"
+	lazygit --version
+	exit 0
+fi
+
+install_via_brew() {
+	if ! command -v brew &>/dev/null; then
+		return 1
+	fi
+	echo -e "${YELLOW}使用 Homebrew 安装 lazygit...${NC}"
+	brew install lazygit
+}
+
+install_via_apt() {
+	if ! command -v apt-get &>/dev/null; then
+		return 1
+	fi
+	echo -e "${YELLOW}使用 apt 安装 lazygit...${NC}"
+	sudo apt-get update
+	sudo apt-get install -y lazygit
+}
+
+# 从 GitHub Release 解压到 ~/.local/bin（与 nvim/init.lua 中的 PATH 一致）
+install_via_release() {
+	local ver
+	ver=$(curl -fsSL "https://api.github.com/repos/jesseduffield/lazygit/releases/latest" |
+		grep '"tag_name":' |
+		sed -E 's/.*"v([^"]+)".*/\1/')
+	if [[ -z "$ver" ]]; then
+		echo -e "${RED}无法解析 lazygit 最新版本号${NC}" >&2
+		return 1
+	fi
+
+	local os_raw arch_raw asset url
+	os_raw=$(uname -s)
+	arch_raw=$(uname -m)
+
+	case "${os_raw}-${arch_raw}" in
+	Darwin-arm64) asset="lazygit_${ver}_Darwin_arm64.tar.gz" ;;
+	Darwin-x86_64) asset="lazygit_${ver}_Darwin_x86_64.tar.gz" ;;
+	Linux-x86_64) asset="lazygit_${ver}_Linux_x86_64.tar.gz" ;;
+	Linux-aarch64 | Linux-arm64) asset="lazygit_${ver}_Linux_arm64.tar.gz" ;;
+	*)
+		echo -e "${RED}当前平台不支持自动下载二进制: ${os_raw} ${arch_raw}${NC}" >&2
+		return 1
+		;;
+	esac
+
+	url="https://github.com/jesseduffield/lazygit/releases/download/v${ver}/${asset}"
+	local tmpdir dest_bin
+	tmpdir=$(mktemp -d)
+	dest_bin="${HOME}/.local/bin"
+
+	echo -e "${YELLOW}下载 lazygit v${ver} (${asset})...${NC}"
+	curl -fsSL -o "${tmpdir}/${asset}" "${url}"
+	tar -xzf "${tmpdir}/${asset}" -C "${tmpdir}"
+
+	mkdir -p "${dest_bin}"
+	mv -f "${tmpdir}/lazygit" "${dest_bin}/lazygit"
+	chmod +x "${dest_bin}/lazygit"
+	rm -rf "${tmpdir}"
+
+	echo -e "${GREEN}已安装到 ${dest_bin}/lazygit${NC}"
+	if [[ ":${PATH}:" != *":${dest_bin}:"* ]]; then
+		echo -e "${YELLOW}提示: 请将 ${dest_bin} 加入 PATH（例如在 ~/.zshrc 中 export PATH=\"\$HOME/.local/bin:\$PATH\"）${NC}"
+	fi
+}
+
+main() {
+	if install_via_brew; then
+		:
+	elif install_via_apt; then
+		:
+	elif install_via_release; then
+		:
+	else
+		echo -e "${RED}lazygit 安装失败：未找到 brew/apt，且当前平台无法使用官方二进制发布包。${NC}" >&2
+		exit 1
+	fi
+
+	echo -e "${GREEN}lazygit 安装完成:${NC}"
+	command -v lazygit
+	lazygit --version
+}
+
+main