Provided are a method and apparatus for multi-bus device fused access. The method includes: receiving, by a bus, an instruction for accessing a fused node of a device, which instruction containing a matching word, an initial address, and an offset; performing matching according to the matching word and activating a fused drive; acquiring, by the fused drive, the initial address and the offset from the instruction on the bus respectively; computing an address of a first bus of the device according to the initial address, and computing an address of a second bus of the device according to the initial address and the offset; and accessing the device according to the address of the first bus so as to acquire first information, and accessing the device according to the address of the second bus so as to acquire second information.