Parameter setting system and method of optical disc machine controller

The present invention relates to a controller parameter setting system of optical disk drive. It includes input module, arithmetic logic unit and comparator. The input module can be used for receiving signal outputted by controller, the arithmetic logic unit can be used for making operation according to the signal received by input module so as to obtain amplitude gain of signal outputted by controller; the comparator can be used for utilizing comparison of the amplitude gain of outputted signal and preset value to define that the parameter set-up of controller is met with requirements or not. Said invention also provides a method for setting controller parameter.