A method for managing a link between a terminal and a network device in a wireless system, comprising: receiving, by a first network device, a first link quality parameter sent by a second network device, wherein the first link quality parameter is used to indicate a link quality between a terminal device and the second network device, and the first network device provides a current service for the terminal device; and determining, by the first network device, whether a connection between the terminal device and the second network device is needed according to the first link quality parameter; characterized in that, after determining whether the connection between the terminal device and the second network device is needed, the method further comprises: if it is determined that the connection between the terminal device and the second network device is needed, and there is no connection between the terminal device and the second network device, establishing, by the first network device, the connection between the terminal device and the second network device; wherein establishing, by the first network device, the connection between the terminal device and the second network device, comprises: adding, by the first network device, the connection between the terminal device and the second network device as an auxiliary connection of a link of the terminal device according to the first link quality parameter. receiving, by a first network device, a first link quality parameter sent by a second network device, wherein the first link quality parameter is used to indicate a link quality between a terminal device and the second network device, and the first network device provides a current service for the terminal device; and determining, by the first network device, whether a connection between the terminal device and the second network device is needed according to the first link quality parameter; characterized in that, after determining whether the connection between the terminal device and the second network device is needed, the method further comprises: if it is determined that the connection between the terminal device and the second network device is needed, and there is no connection between the terminal device and the second network device, establishing, by the first network device, the connection between the terminal device and the second network device; wherein establishing, by the first network device, the connection between the terminal device and the second network device, comprises: adding, by the first network device, the connection between the terminal device and the second network device as an auxiliary connection of a link of the terminal device according to the first link quality parameter. if it is determined that the connection between the terminal device and the second network device is needed, and there is no connection between the terminal device and the second network device, establishing, by the first network device, the connection between the terminal device and the second network device; wherein establishing, by the first network device, the connection between the terminal device and the second network device, comprises: adding, by the first network device, the connection between the terminal device and the second network device as an auxiliary connection of a link of the terminal device according to the first link quality parameter.