The invention discloses an aluminum zinc pool deslagging method for a continuous aluminum zinc plating production line. The aluminum zinc pool deslagging method for the continuous aluminum zinc plating production line comprises the following main steps of: guiding slag-containing aluminum zinc liquid out of a zinc pool by using an aluminum zinc liquid pipe and a high-speed aluminum zinc pump, spraying the slag-containing aluminum zinc liquid into a centrifugal cyclone at a high speed; separating aluminum zinc slag from the aluminum zinc liquid by using the centrifugal cyclone so as to purify the aluminum zinc liquid; guiding the purified aluminum zinc liquid back to the aluminum zinc pool by using a top overflowing pipe of the centrifugal cyclone; and making the aluminum zinc slag enter an aluminum zinc slag collector through a deslagging pipe and periodically fishing out the aluminum zinc slag in the aluminum zinc slag collector so as to finish an aluminum zinc pool deslagging process for the continuous aluminum zinc plating production line. By the method, the aluminum zinc liquid in a hot-dip aluminum zinc plating process can be deslagged when the aluminum zinc plating production line works or stops, so that the deslagging difficulty in the continuous aluminum zinc plating production line is successfully solved, the continuous aluminum zinc plating production cost can be effectively reduced, and the quality of a continuous aluminum zinc plating plate can be improved easily.