The invention discloses a sand suction hole cover which comprises a pipe used as a sand suction pipe and a cover plate covering an upper port of the pipe. The cover plate is fixed to a steel structure. The invention also provides a method for utilizing the sand suction hole cover to cover a sand suction hole, a bottom plate and the pipe are firstly welded to be welded to a crossbeam, the whole participates in a sand washing process and a sand suction process, and after sand suction is completed, a stepping plate covers the top end of the pipe and is fixed through a screw. The sand suction holeis covered with the cover plate, the cover plate is fixed to the steel structure, the sand suction hole is welded and plugged after sand suction is completed, the plugging work of the sand suction hole becomes simpler, welding is not needed by the plugging work any more, damage to paint on the surface of a sealing area is avoided, secondary construction for coating paint is not needed any more, implementation by workers is easy, the workload is reduced, cost is saved, and meanwhile, the working efficiency is further improved.