A method of locating peripheral component interconnect (PCI) devices is provided. The method includes analyzing peripheral component interconnect spaces (PCI spaces) of peripheral component interconnect-peripheral component interconnect bridges (PCI-PCI bridges) of a 0-numbered bus, so as to obtain a bus number of a next bus connected to each of PCI-PCI bridges and record the bus number in a linked list; continuing to record a bus number of a next bus connected to the PCI-PCI bridges corresponding to the bus number recorded in the linked list; and when no next bus number is found, traversing and locating the PCI devices according to all of the bus numbers recorded in the linked list.