The invention provides a VR chip control method based on a PECI bus. Based on a PECI bus, commands are sent through a BMC to obtain VR chip information, fixed static information is displayed to a userto be looked up, and dynamic information is updated in real time. If output information exceeds the tolerance standard range, an alarm prompt mechanism is triggered, a VID command interface is provided, and debugging is carried out. The invention discloses a VR chip control system based on a PECI bus. The method and the system have beneficial effects that each server can display static and dynamic information of the VR chip through the BMC management interface, all users can look up the static and dynamic information and verify whether the static and dynamic information exceeds tolerance standards or not, debugging can be carried out without an oscilloscope or a Britier professional debugging tool, the development efficiency is improved, and the troubleshooting and problem solving efficiency is improved.