An electroconductive cover plate includes a metal substrate and a lubricating conductive layer arranged on the metal substrate and includes: lubricating resin, combining resin, and conductive particles that are dispersed in the lubricating resin and combining resin; the lubricating resin accounts for 40-60 wt% of the lubricating conductive layer, the combining resin accounts for 20-36 wt% and theconductive particles accounts for 4-20 wt% of same. The lubricating conductive layer has conductive and lubricating functions at the same time, so that when a drilling needle drills the cover plate, the drilling needle can be covered by the lubricating resin so as to provide buffer and lubrication, and reduce impact when the drilling needle drills the metal substrate; besides, the conductive particles enable the lubricating conductive layer to be electroconductive, so that during a drilling process, needle breaking or other abnormity can be detected via driving voltage, thus achieving failureremoval in a short time.