diff --git a/DEPLOY.md b/DEPLOY.md
index 0a8b798..1e1a842 100644
--- a/DEPLOY.md
+++ b/DEPLOY.md
@@ -108,8 +108,8 @@ curl -X POST http://127.0.0.1:21450/api/push/test
 ### 4.1 安装依赖
 
 ```bash
-# Python 3.10+
-sudo apt install -y python3 python3-pip python3-venv
+# Python 3.10+（部署脚本会自动创建 .venv；若无 venv 模块需先装）
+sudo apt install -y python3 python3-venv python3-pip
 
 # Node.js + PM2
 curl -fsSL https://deb.nodesource.com/setup_20.x | sudo -E bash -
@@ -272,8 +272,8 @@ docker compose up -d
 ```bash
 cd /opt/Binance_Altcoin_Monitor
 git pull
-python3 -m pip install -r backend/requirements.txt -q
-pm2 restart binance-altcoin-monitor
+./deploy/pm2-deploy.sh
+# 或手动: .venv/bin/pip install -r backend/requirements.txt && pm2 restart binance-altcoin-monitor
 ```
 
 ---
@@ -284,6 +284,7 @@ pm2 restart binance-altcoin-monitor
 |------|------|
 | `bash\r: No such file or directory` | 脚本为 Windows 换行，执行：`sed -i 's/\r$//' deploy/*.sh && chmod +x deploy/*.sh` |
 | `cannot pull with rebase: unstaged changes` | 执行 `git stash` 后重试；或 `DEPLOY_SKIP_GIT_PULL=1 ./deploy/pm2-deploy.sh` 跳过拉取 |
+| `No module named pip` | 执行 `sudo apt install -y python3-venv` 后重新 `./deploy/pm2-deploy.sh`（脚本会用 .venv） |
 | Web 无数据 | 检查能否访问币安；国内服务器尝试 `PROXY_ENABLED=true` |
 | 企微收不到 | 检查 `WECOM_WEBHOOK_URL`；`curl -X POST .../api/push/test` |
 | 08:10 未推送 | 确认容器/PM2 在 08:10 前已运行；查日志 |
diff --git a/deploy/lib.sh b/deploy/lib.sh
index a71c84e..05c7191 100644
--- a/deploy/lib.sh
+++ b/deploy/lib.sh
@@ -36,3 +36,36 @@ git_update_safe() {
     git stash pop || echo "    提示: stash 恢复冲突时可手动处理: git stash list"
   fi
 }
+
+# 创建 .venv 并安装依赖（不依赖系统 pip）
+ensure_python_venv() {
+  local repo_dir="${1:?}"
+  cd "$repo_dir"
+
+  local venv_python="${repo_dir}/.venv/bin/python"
+  local venv_pip="${repo_dir}/.venv/bin/pip"
+
+  if [ ! -x "$venv_python" ]; then
+    echo "    创建虚拟环境 .venv ..."
+    if ! python3 -m venv .venv 2>/dev/null; then
+      echo "    安装 python3-venv（需要 root）..."
+      if command -v apt-get &>/dev/null; then
+        sudo apt-get update -qq
+        sudo DEBIAN_FRONTEND=noninteractive apt-get install -y -qq python3-venv python3-pip
+      elif command -v yum &>/dev/null; then
+        sudo yum install -y python3-pip
+      elif command -v dnf &>/dev/null; then
+        sudo dnf install -y python3-pip
+      else
+        echo "错误: 无法创建 venv，请手动安装 python3-venv 或 python3-pip"
+        exit 1
+      fi
+      python3 -m venv .venv
+    fi
+  fi
+
+  echo "    安装 Python 依赖到 .venv ..."
+  "$venv_pip" install -U pip -q
+  "$venv_pip" install -r backend/requirements.txt -q
+  echo "    使用: $("$venv_python" --version 2>&1) ($venv_python)"
+}
diff --git a/deploy/pm2-deploy.sh b/deploy/pm2-deploy.sh
index 6c429a7..8542d8a 100644
--- a/deploy/pm2-deploy.sh
+++ b/deploy/pm2-deploy.sh
@@ -45,9 +45,7 @@ fi
 
 mkdir -p data logs
 
-echo "==> 安装 Python 依赖..."
-python3 -m pip install -U pip -q
-python3 -m pip install -r backend/requirements.txt -q
+ensure_python_venv "${INSTALL_DIR}"
 
 echo "==> 启动 PM2..."
 pm2 delete binance-altcoin-monitor 2>/dev/null || true
diff --git a/ecosystem.config.cjs b/ecosystem.config.cjs
index ee5d86d..29ca586 100644
--- a/ecosystem.config.cjs
+++ b/ecosystem.config.cjs
@@ -8,7 +8,7 @@ module.exports = {
       name: "binance-altcoin-monitor",
       cwd: "/opt/Binance_Altcoin_Monitor",
       script: "run.py",
-      interpreter: "python3",
+      interpreter: "/opt/Binance_Altcoin_Monitor/.venv/bin/python",
       instances: 1,
       autorestart: true,
       watch: false,