The invention relates to an automatic correspondence updating computer switching device, in particular to a peripheral device, that is, the computer switching device utilizes a peripheral interface microprocessing chip to connect a plurality of USB connectors, after necessary data of a plurality of the peripheral devices are read and stored, and the necessary data is transmitted to a plurality ofcomputer interface microprocessing chips for storage, so as to lead all computers to read the necessary data of the peripheral devices by the connected computer interface microprocessing chips; when the computer switching device is restarted or the peripheral devices are plugged or unplugged, the peripheral interface microprocessing chip re-reads the necessary data of the peripheral devices and compares the necessary data with the original old necessary data, and then the re-read necessary data of the peripheral devices is transmitted to a plurality of the computer interface microprocessing chips for storage, so as to lead reliable compatibility and connection operation to be carried out between a plurality of the peripheral devices and a plurality of computers and solve the incompatible problem of USB devices.