The website is divided into three modules: old property donation, old property transaction and lost property search. The old object donation module contains the function of object collection and object donation, which is used for some collection activities such as old clothes recycling and book donation initiated by social organizations in schools. The old object trading module trades items to facilitate users to deal with some idle items. The lost and found module is used to publish lost and found items and find notices, which is convenient for users to find lost items.