The embodiments of the present invention disclose a method for isolating a bus failure, which includes: acquiring, from a Compact PCI bus, an address of a target board being accessed; counting retry responses on the Compact PCI bus, wherein the retry responses are generated by access to the target board; sending a reset signal to the target board in response to that the times of the retry responses exceed a retry times threshold. With the embodiments of this invention, the normal operation of a failed device in the system may be restored in time, which may avoid that the bus is hanged up and is favorable for maintenance.
