diff --git a/dev.sh b/dev.sh
index bf389e2..e31aab6 100755
--- a/dev.sh
+++ b/dev.sh
@@ -3,6 +3,14 @@
 
 set -e
 
+# 获取脚本所在目录（项目根目录）
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+cd "$SCRIPT_DIR" || exit 1
+
+# 项目路径常量
+JINGROW_APP_DIR="apps/jingrow"
+FRONTEND_DIR="$JINGROW_APP_DIR/frontend"
+
 # 颜色定义
 RED='\033[0;31m'
 GREEN='\033[0;32m'
@@ -103,6 +111,16 @@ install_redis() {
     fi
 }
 
+# 安装前端依赖
+install_frontend_deps() {
+    local reason="${1:-前端依赖}"
+    info "安装$reason..."
+    (cd "$FRONTEND_DIR" && npm install) || {
+        error "$reason安装失败"
+        return 1
+    }
+}
+
 # 清理进程
 cleanup() {
     info "清理现有进程..."
@@ -180,34 +198,33 @@ check_deps() {
     check_cmd uv || exit 1
     
     # 检查前端依赖
-    if [ ! -d "apps/jingrow/frontend/node_modules" ]; then
+    if [ ! -d "$FRONTEND_DIR/node_modules" ]; then
         warn "前端依赖未安装"
-        info "安装前端依赖..."
-        cd apps/jingrow/frontend && npm install && cd ../..
+        install_frontend_deps "前端依赖" || exit 1
     fi
     
     # 即使 node_modules 存在，也校验 vite 是否可用（可能之前安装不完整）
-    if [ ! -x "apps/jingrow/frontend/node_modules/.bin/vite" ]; then
+    if [ ! -x "$FRONTEND_DIR/node_modules/.bin/vite" ]; then
         warn "未检测到 vite，可执行文件缺失，重新安装前端依赖..."
-        (cd apps/jingrow/frontend && npm install)
+        install_frontend_deps "前端依赖" || exit 1
     fi
     
     # 检查后端依赖（优先使用 uv）
     info "同步后端依赖 (uv)..."
-    if [ -f "apps/jingrow/pyproject.toml" ]; then
+    if [ -f "$JINGROW_APP_DIR/pyproject.toml" ]; then
         # 同步主项目依赖
-        (cd apps/jingrow && uv sync) || {
+        (cd "$JINGROW_APP_DIR" && uv sync) || {
             error "uv 同步失败"
             exit 1
         }
         # 安装所有节点的依赖（使用异步并行安装，提升性能）
         info "安装节点依赖..."
-        (cd apps/jingrow && uv run python -c "from jingrow.utils.node_dependencies import install_all_nodes_dependencies; install_all_nodes_dependencies(max_concurrent=5)" 2>&1) || {
+        (cd "$JINGROW_APP_DIR" && uv run python -c "from jingrow.utils.node_dependencies import install_all_nodes_dependencies; install_all_nodes_dependencies(max_concurrent=5)" 2>&1) || {
             warn "安装节点依赖失败，但继续执行"
         }
-    elif [ -f "apps/jingrow/requirements.txt" ]; then
+    elif [ -f "$JINGROW_APP_DIR/requirements.txt" ]; then
         warn "未发现 pyproject.toml，使用 requirements.txt 安装"
-        (cd apps/jingrow && uv pip install -r requirements.txt) || {
+        (cd "$JINGROW_APP_DIR" && uv pip install -r requirements.txt) || {
             error "uv pip 安装失败"
             exit 1
         }
@@ -276,9 +293,9 @@ start_all() {
     npx --yes concurrently \
         --names "BACKEND,WORKER,FRONTEND" \
         --prefix-colors "blue,yellow,green" \
-        "cd apps/jingrow && uv run python -m jingrow.app" \
-        "cd apps/jingrow && uv run python -m jingrow.dramatiq" \
-        "sleep 3 && cd apps/jingrow/frontend && npm run dev"
+        "cd $JINGROW_APP_DIR && uv run python -m jingrow.app" \
+        "cd $JINGROW_APP_DIR && uv run python -m jingrow.dramatiq" \
+        "sleep 3 && cd $FRONTEND_DIR && npm run dev"
 }
 
 # 只启动前端
@@ -287,7 +304,7 @@ start_frontend() {
     ensure_uv
     cleanup
     check_deps
-    cd apps/jingrow/frontend && npm run dev
+    (cd "$FRONTEND_DIR" && npm run dev)
 }
 
 # 只启动后端
@@ -308,8 +325,8 @@ start_backend() {
     npx --yes concurrently \
         --names "BACKEND,WORKER" \
         --prefix-colors "blue,yellow" \
-        "cd apps/jingrow && uv run python -m jingrow.app" \
-        "cd apps/jingrow && uv run python -m jingrow.dramatiq"
+        "cd $JINGROW_APP_DIR && uv run python -m jingrow.app" \
+        "cd $JINGROW_APP_DIR && uv run python -m jingrow.dramatiq"
 }
 
 # 停止服务