Abstract: Aiming at the lack of controller elements and low authenticity of communication simulation in the vehicle simulation test system under the centralized electronic and electrical architecture, a vehicle architecture test technology was investigated based on virtualization technology, providing a test platform architecture with a virtualized model of controller and bus communication, developing a virtualized model of on-board controller based on quick EMUlator (QEMU) virtual machine technology, and constructing a virtual bus of controller based on the PCI bus. Firstly, a virtualized model of vehicle controller was developed based on QEMU virtual machine technology. And then, a virtual bus communication of controller was constructed based on PCI bus to realize more realistic vehicle communication simulation with the Ethernet-based data transmission channel collectively. The final test results show that this platform can fully simulate the influence of vehicle controller and communication on the functional testing, meeting the needs of vehicle functional testing under centralized architecture, providing a higher reliability, real-time performance and stability compared with commonly model-in-the-loop simulation systems.