Artificial maintenance of the automatic weather station (AWS) network is of great importance but needs a large amount of hard and timeconsuming work. The operational principles and the architecture of the AWS network, with observing data being collected by GPRS, are introduced. Based on this, the selfmaintenance procedures for the realization of AWS network updating and remote controlling are discussed in detail emphatically, and the judgment of sensor status from realtime observing data, the automatic extraction of fault information, and the automatic transmitting of short messages are described. It is indicated that the remote realtime supervision of working status and the automaintenance of the AWS network are satisfactorily realized, and the requirements of AWS network maintenance are met, with the network capacity becoming increased greatly.