In view of the problems such as too many idle articles for college students and the actual needs of poor college students, we have constructed a platform for the transaction of idle articles for college students and the sustainable public welfare network on campus.
At the same time, through preliminary research, competition analysis and user demand analysis, the main functional sections are determined: identity authentication, establishment of transactions, homepage browsing and transactions and other important page structures. In this design process, the detailed categories of users are specifically distinguished, and users can choose different identities to enter the software for use. The interface design refers to some shopping and second-hand goods trading software on the market.