Schools are densely populated. Smart locker can bring great convenience to send and receive and save the goods. Smart mailbox brings a lot of convenience for the letter management; usually the libraries are not permitted to enter with books, so the parcel locker is required. Students in the stadium or gymnasium, it’s not convenient with their private goods, they can put them in the parcel locker. Some classrooms are short of outlets, the charging locker can be installed to save the space and make convenience and safety.