Disclosed in the present application file is a network RTK positioning system for an autonomous moving device. The positioning system comprises a plurality of base stations. Each base station comprises a first satellite receiver for receiving a satellite signal, and also comprises a first base station communication module. The first base station communication module communicates with a data processing center, so as to enable the autonomous moving device to obtain a correction signal generated according to the position of the autonomous moving device in response to a request of the autonomous moving device. The at least one first base station communication module accesses the Internet by means of a switching device connected to a network of the at least one first base station communication module, so as to perform communication, or the at least one first base station communication module comprises at least one of public frequency band communication modules so as to perform communication. The present application file also relates to a positioning system operating method, an autonomous moving device, an automatic working system, and a computing device processing method.