A remote device virtualization design project based on Kernel-based Virtual Machine (KVM) is proposed according to the demand of sharing home multimedia device. The project first implements remote device virtualization using the technology of QEMU device emulation. And then we describe the detailed implementation of the sound card and graphics card and optimize them. At last we analyze the performance through experiments. Our design only needs to add a remote device virtualization in the virtual device layer in user mode which is flexible and reliable without modifying the operating system.