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There are over 40 countries use bicycle sharing systems to connect place to place. And provide“ A Leases and B Returns” bike rental service. It can not only improve the quality of life of the citizens and enhance their satisfaction but also reducing use of motor vehicles and improve air quality and traffic environment.Therefore increasingly popular of public bike rental.ButThe public bike’s safety had been forgotten.In order to ensure the safety of users, we design a new system with hygiene, universal helmet and lease process.For the city, and to create a harmonious safety