The invention discloses a high-efficient dedusting device for a garment production workshop. The device comprises a base, wherein support rods are fixedly connected to the top part of the base; a support plate is fixedly connected to one opposite sides of the two support rods; shaft rods are rotatably connected into the support plate; first gears are fixedly connected to the top ends of the shaftrods; connecting blocks are fixedly connected to the top part of the support plate; fixing pipes are fixedly connected to one opposite sides of each two connecting blocks; rotary pipes are rotatably connected to the top ends of the fixing pipes; second gears are fixedly connected to the surfaces of the rotary pipes. The device relates to the technical field of garment production. According to thehigh-efficient dedusting device for the garment production workshop, the problem that a large number of fiber dust can be produced during a garment production process is solved, the human health is prevented from being harmed, a certain of big potential safety hazard is eliminated, the dedusting efficiency is greatly improved, enterprise production is facilitated, and the enterprise profit is increased.