Su Xiaoyuan is a WeChat applet that focuses on college student volunteer service. It not only provides volunteer information services for college student volunteers, but also provides many practical functions such as online search for designated volunteers and management volunteers for volunteer service demand units. This project is self-designed and written from UI to front-end code and back-end code, and does not use any commercial applet editing tools or applet templates. At present, Su Xiaoyuan's 1.0.1Beta version has passed WeChat's official review and can be directly scanned by WeChat. The UI of Su Xiaoyuan applet adopts the popular card style, with the primary color of# 2575fc. The overall style is simple and generous, and the use is smooth. The front-end is mainly based on the Flex layout of WXSS and the rpx responsive layout of WeChat applets, which are suitable for most models on the market and Javascript also adopt the current mainstream ES6 syntax. The back-end is developed based on the cloud function provided by Tengxun Cloud. The environment is node.js 10.15. The database uses JSON database provided by small program cloud development. The data table structure is designed by us independently. For details, you can view the pictures in the background information.