The invention relates to a drilling bit cleaning mechanism for an electric drill. The drilling bit cleaning mechanism comprises a cleaning box body, a supporting seat arranged at the upper end of thecleaning box body and used for supporting the electric drill, a cleaning unit arranged in the cleaning box body, and an airing unit arranged in the cleaning box body; the supporting seat is movably connected with the cleaning box body; the cleaning unit comprises a cleaning nozzle formed in the cleaning box body; a water outlet of the cleaning nozzle is over against a drilling bit; a water inlet of the cleaning nozzle stretches out of the cleaning box body through a hose and is connected with a water pump; the airing unit comprises an airing nozzle formed in the cleaning box body; an air outlet of the airing nozzle is over against with the drilling bit; and an inlet of the airing nozzle stretches out of the cleaning box body through a hose and is connected with an air pump. The drilling bit cleaning mechanism has the advantages that the cleaning nozzle and the airing nozzle are formed in the cleaning box body, so that the drilling bit can be cleaned and subjected to rapid airing simplyby inserting the drilling bit into the cleaning box body, the airing waiting time is shortened, and the working efficiency is improved.