The invention discloses a restraining method for route oscillation and a device, which belongs to the communication field. The method comprises the steps as follows: timing starts when a route changes for the first time, and the route change degree and the route meliorating degree are recorded; the route is restrained when the change degree reaches the predetermined degree threshold; when the meliorating degree reaches or exceeds the predetermined restraining window closing threshold, the change degree is set as a predetermined constant, and the timing is ended; and when the timing is ended, the restraint on the route is relieved if the recorded change degree is more than or equals to the predetermined track search threshold. The device comprises a timing module, a change degree recording module, a meliorating degree recording module, a restraining module and a restraint relieving module. The restraining method and the device time the route when oscillation occurs and restrain the route, and relieve the restraint on the route under the track search state in time, so that the problem that the convergence of the route is slow because the route oscillation is restrained by mistake can be avoided, and the real route oscillation can be restrained.