The invention relates to an in-place self-identifying method, an in-place self-identifying device, an in-place self-identifying system, and a base station. The in-place self-identifying method comprises the steps of: confirming whether a terminal is a first terminal when detecting that the base station establishes an RRC connection with the terminal; and transmitting in-place information of the terminal to a management server when confirming that the terminal is the first terminal, wherein the in-place information is used for instructing the management server to respond to an in-place status query or notify an in-place status, and the in-place information comprises an in-place time of the terminal. The in-place self-identifying method, the in-place self-identifying device and the in-placeself-identifying system can automate the confirmation and management of the in-place information, timely understand the in-place situation of a user of the first terminal, have the capability of automatic identification, and can get rid of the dependence on personnel operation.