diff --git a/dev.sh b/dev.sh
index ea3c03a..0bf8805 100755
--- a/dev.sh
+++ b/dev.sh
@@ -69,6 +69,18 @@ cleanup() {
     success "清理完成"
 }
 
+# 确保 uv 可用：最先执行
+ensure_uv() {
+    if command -v uv &> /dev/null; then
+        return 0
+    fi
+    warn "uv 未安装，将尝试自动安装"
+    install_uv || {
+        error "自动安装 uv 失败，请手动安装: curl -fsSL https://astral.sh/uv/install.sh | sh"
+        exit 1
+    }
+}
+
 # 检查Redis
 check_redis() {
     if redis-cli ping &> /dev/null; then
@@ -95,13 +107,8 @@ check_deps() {
     info "检查依赖..."
     
     check_cmd node || exit 1
-    if ! command -v uv &> /dev/null; then
-        warn "uv 未安装"
-        install_uv || {
-            error "自动安装 uv 失败，请手动安装: curl -fsSL https://astral.sh/uv/install.sh | sh"
-            exit 1
-        }
-    fi
+    # 这里假设 ensure_uv 已经在更早阶段被调用
+    check_cmd uv || exit 1
     
     # 检查前端依赖
     if [ ! -d "apps/jingrow/frontend/node_modules" ]; then
@@ -150,6 +157,7 @@ build_reload_dirs() {
 # 启动所有服务
 start_all() {
     info "启动开发环境..."
+    ensure_uv
     cleanup
     check_redis
     check_deps
@@ -175,6 +183,7 @@ start_all() {
 # 只启动前端
 start_frontend() {
     info "启动前端..."
+    ensure_uv
     cleanup
     check_deps
     cd apps/jingrow/frontend && npm run dev
@@ -183,6 +192,7 @@ start_frontend() {
 # 只启动后端
 start_backend() {
     info "启动后端..."
+    ensure_uv
     cleanup
     check_redis
     check_deps