The utility model relates to a virtual network switching device based on a four-time physical port of a DPDK network card. The device comprises a CPU, a north bridge chip, a south bridge chip, four double-row in-line memory modules, two USB interfaces, eight DPDK network cards, two Ethernet interfaces, a system bus and eight PCIE buses. The CPU is connected with the north bridge chip through a system bus; The north bridge chip is respectively connected with the south bridge chip and the four double-row in-line memory modules; The south bridge chip is respectively connected with the two USB interfaces and the two Ethernet interfaces; And the south bridge chip is connected with the eight DPDK network cards through eight PCIE buses. According to the technical scheme provided by the utility model, rapid deployment services can be provided for different services, different flow expressions are issued to the data exchange through the controller, a reasonable data exchange solution is provided for the electric power Internet of Things and the transformer substation, hardware resources are saved as required, and the maintenance cost is reduced.