TF card slot multiplexing method and system based on server PCH and BMC

The invention relates to the technical field of servers, and provides a TF card slot multiplexing method and a system based on a server PCH and a BMC, and the method comprises the steps: judging the in-place state of a TF card on a server mainboard; when it is judged that the TF card is in place, judging a device currently accessing the TF card slot, and the device comprises a PCH and a BMC; whenthe device currently accessing the TF card slot is the PCH, controlling the PCH and the TF card to perform data communication; when the device currently accessing the TF card slot is the BMC, controlling the BMC and the TF card to perform data communication; and when the PCH and the BMC access the TF card slot at the same time, controlling the PCH and the BMC to respectively complete data communication with the TF card in sequence according to the preset priority, thereby realizing the data communication of the PCH and the BMC by arranging one TF card slot on the server mainboard, and solvingthe problem of insufficien