diff --git a/install.sh b/install.sh
index f69a370..66aabc7 100644
--- a/install.sh
+++ b/install.sh
@@ -1103,13 +1103,11 @@ install_backend_dependencies() {
         npm config set registry https://registry.npmmirror.com
     fi
 
-    # 设置npm使用Python3
-    npm config set python python3
 
     print_info "正在安装依赖包（包含数据库native模块，可能需要几分钟）..."
 
     # 安装依赖，捕获错误
-    if npm install --production; then
+    if PYTHON=python3 npm install --production; then
         print_success "后端依赖安装完成"
     else
         print_error "依赖安装失败"
@@ -2024,8 +2022,6 @@ update_install_dependencies() {
         fi
     fi
 
-    # 设置npm使用Python3
-    npm config set python python3
 
     # 清理旧的node_modules
     if [[ -d "node_modules" ]]; then
@@ -2035,7 +2031,7 @@ update_install_dependencies() {
 
     print_info "正在重新安装依赖（可能需要几分钟）..."
 
-    if npm install --production; then
+    if PYTHON=python3 npm install --production; then
         print_success "依赖更新完成"
     else
         print_error "依赖更新失败"