The invention discloses a charging and battery changing system and an operating method thereof, wherein the system comprises an operating management center device, a charging, battery converting and controlling device and a terminal device; the operating management center device is used for managing the charging and battery changing information in a managed area; the charging, battery converting and controlling device is connected with the operating management center device via a communication network and connected with the terminal device via a wireless local area network and a controller area network (CAN) bus, and is used for charging and changing a battery, controlling a charging and battery changing station and identifying the terminal device; and the terminal device is connected with the operating management center device via the communication network and is used for providing the operating state of the terminal device. According to the invention, the scattered and isolated terminal devices are connected with charging and battery changing devices via the network so that the operating management center device can conveniently acquire the operating state of each device, thus the charging and battery changing system can comprehensively monitor and manage each device; and furthermore, according to the invention, a basis can be provided for the development of the electric vehicle industry.