The invention discloses a fully-automatic intelligent board brushing machine. The fully-automatic intelligent board brushing machine is capable of fully automatically carrying out a series of operation of loading, conveying, material arrival induction, stopping, grabbing, wet brushing, liquid-level adjustment, dry brushing polishing, waste scrap recovery, unloading recovery and the like on a PCB,manual participation into operation is not required in the whole brushing process, high automatic and intelligent operation degree is achieved, and the problems of low brushing efficiency, poor brushing effect, high labor intensity of workers, and high labor service cost of an enterprise, in traditional manual brushing for a PCB, are solved; and brushing running modes and brushing directions of awet brush mechanism and a dry brush mechanism are scientifically and reasonably designed separately, so that no-dead-angle and thorough brushing for the PCB is realized, and the problems that wet brushing cannot be carried out on a PCB, the liquid level of a cleaning liquid cannot be adjusted, brushes are liable to be deflected and thinned, and the brushes are high in replacement frequency, of equipment carrying out brushing on the PCB through a cylindrical brush group or a long-cylinder brush group at present, are solved.