The invention discloses a flexible board cover plate for processing a flexible circuit board. The flexible board cover plate comprises a base material body and a resin board body, wherein the resin plate body is a plate body formed by curing fine particles, and the base material body comprises a cold punching plate or kraft paper or aluminum. During use, as the resin plate body can enable the small drill points to be stabilized instantly when the small drill points are in contact with the surface of the resin plate body during drilling, the deflection is reduced; and meanwhile, the cutting powder generated after the drill bit is cut by the small drill bit is converted into dust to be sucked away, so that the optimal hole position precision can be provided for drilling in the drilling process, and therefore, on the premise that the hole position precision of drilling is met, the problem of needle breakage happening in the processing of 0.075-0.10 mm micro drill needles is improved on the premise that the hole position precision of drilling is met. In addition, the flexible board cover plate is convenient for processing, is easy and convenient.