The present application discloses a method for allocating a network resource, a method for connecting to a target device in a network, a base station, and a terminal device. In the method for allocating a network resource, a base station receives request information sent by a first terminal device, where the request information is configured to request the base station to allocate a network resource; the base station sends, to the first terminal device, allocation information of the network resource allocated by the base station, where the allocation information is configured to indicate the network resource allocated by the base station; the first terminal device is a terminal served by a cell of the base station, and the second terminal device is a terminal that accesses the target device by using the first terminal device. Thus, a problem of network resource waste is reduced, and user experience is improved.