Precision seeding device

The invention relates to a precision sowing device. The device comprises a rotating mechanism and a roller and a pneumatic panel which are mounted on the rotating mechanism, wherein the roller is provided with multiple seeding units, and each seeding unit comprises a gas channel and suction nozzles arranged on the gas channel; the pneumatic panel is provided with a round groove, and inlets of the gas channels of the seeding units are connected into the round groove; the pneumatic panel comprises a gas suction channel, a first gas inlet channel and a second gas inlet channel. According to the precision sowing device, seeding is conducted in a mode of negative pressure seed suction and a positive pressure seed blowing, the novel pneumatic panel and pneumatic pieces are specially developed and designed, it is guaranteed that in the rotating process of the roller, the effects of vacuuming, seed distribution and dredging can be achieved alternately, the good seeding effect is guaranteed, meanwhile, the roller is p