Provided in the implementations of the present disclosure are a connection management method and apparatus, a terminal and a system, relating to the field of communications. The method comprises: a first terminal sending, to a second terminal, first connection management information corresponding to a first service, wherein the first connection management information is used for managing a connection between the first terminal and the second terminal, and different services correspond to different pieces of connection management information; and the first terminal receiving first response information sent by the second terminal, wherein the first response information is a response to the first connection management information.