The invention discloses a virtual routing device and a routing method thereof and relates to the technical field of an internet. The device disclosed by the invention comprises programmable hardware and a host, wherein the programmable hardware is used for achieving the data packet transmission function of a data plane; the host achieves the functions of a control plane and a management plane and comprises a host control unit and a virtual machine unit; the host control unit is used for initializing the programmable hardware and the virtual machine unit and periodically updating the items in the programmable hardware; and the virtual machine unit is used for achieving the functions of processing route protocols and processing data packets, generating and updating a route table and an ARP (Address Resolution Protocol) table in real time and providing the route table and the ARP table for the host control unit. In the invention, multiple parallel virtual networks can be simultaneously supported to operate different applications; the established different virtual networks can be completely isolated and are not mutually interfered; the forwarding rate is high and can reach the linear speed; and the device provided by the invention also has the characteristics of programmable depth, flexibility in configuration and good expansibility.