The utility model discloses a drum noise-abatement device. A fixing rod which passes through a drum body and is fixed on the drum body is provided with a rotating shaft. A connecting rod rotates around the fixing rod through the rotating shaft. The external thread of a regulating rod which rotates along a cross-section direction in the fixing rod is screwed in the threaded hole of a rotary sleeve. The rotary sleeve rotates in the connecting rod through a hole. The other end of the connecting rod fixes a lower clamping board through a fixing hole. An upper clamping board fixing a support plate is connected with the lower clamping board. The unroofed conical surface of the upper clamping board is sleeved with a soundproofing pad. A fixing board fixes the soundproofing pad on the support plate through threaded connection. The drum noise-abatement device is internally disposed in a drum. Relative positions of the soundproofing pad and a drum head can be adjusted through adjusting positions of the lower clamping board on the connecting rod and adjusting length of the regulating rod external thread screwed in the threaded hole of the rotary sleeve. Under the condition that practice hand feeling is not influenced, practice sound of a percussion instrument is reduced. The percussion instrument can be used normally after the soundproofing pad is separated from the drum surface.