Routing processing method and system as well as router

The embodiment of the invention discloses a routing processing method which comprises the steps of: acquiring information of routings reaching a destination address, wherein the information of routings is released by at least two peers; selecting an optimal routing reaching the destination address from the information of the routings and releasing the information of the optimal routing to peers except the peers from which the information of the optimal routing comes; and selecting a second best routing reaching the destination address from the information of the routings and releasing the information of the second best routing to the peers from which the information of the optimal routing comes. Accordingly, the embodiment of the invention also discloses a routing processing system and a router. By the technical scheme of the invention, routing convergence rate can be accelerated and delay and pack loss in the process of routing convergence can be reduced accordingly when the optimal routing breaks down or a network structure is changed.