In this paper, a distributed power system consisting of two power boards is designed for high-power distributed unmanned ground vehicle computer. This design scheme enables the power system to provide high-power supply at the same time to ensure a higher quality of power supply. Through the reasonable planning of power supply path and the accurate setting of decoupling capacitor, the power distribution network has higher voltage accuracy and lower voltage ripple noise. In addition, the Power Integrity simulation software is used to analyze, improve and verify the design to ensure that the power system design has a high quality. Finally, the actual measurement results show that the power system design scheme can effectively improve the power integrity of the distributed power network.