Compared with traditional monolithic kernel based virtualization architecture, microkernel-based virtualization architecture has smaller trusted computing base and its security is easier to be verified by formal methods completely. However, in microkernel-based virtualization architecture, communication between virtual machines on the same computer still requires the involvement of network card driver, which leads to low efficiency. In this paper, we propose a method to accelerate communication between virtual machines on the same computer by adding data selection module and data transmission module in the network service of microkernel-base virtualization architecture. With the method, communication between virtual machines on same computer can be completed in the memory instead of network card driver. Experiment shows that our method can improve the efficiency of communication effectively.