The invention relates to an Internet parking platform system supporting code sharing. The system comprises an Internet sharing parking service platform, a parking client application, a parking space unlocking device, and a parking space lock. A parking space sharing user transmits the code data of the parking space lock and the related information of a parking space through the parking client application, and stores the code data of the parking space lock and the related information of the parking space in the Internet sharing parking service platform. A user who needs parking obtains the related information of the parking space and the code data of the parking space lock from the Internet sharing parking service platform through the parking client application, transmits the code data through the parking client application and the parking space unlocking device, achieves the unlocking/locking of the parking space lock and completes the parking. The system facilitates the sharing of the parking space resources among parking space users, is not high in requirements for the parking space lock, reduces the cost of the parking space lock, and reduces the parking transaction cost and sharing cost. Meanwhile, the system provides a new and fashionable sharing mode for users, improves the efficiency of service sharing, prompts the popularization of parking space sharing, and reduces the management cost.