The invention provides a plant seed sowing device, which comprises a suction module, a vertical moving module, a horizontal moving module, a feeding area and a sowing area. The suction module comprises a base and a plurality of suction units. The base is arranged on the vertical moving module, and the vertical moving module is arranged on the horizontal moving module, so that the suction module can move horizontally and vertically, and the feeding area is arranged. The seeding area is arranged at a second position vertically below the lateral moving module.This creation uses the automatic way to complete the sowing, which can greatly reduce the manpower and the sowing time.本創作提供一種植物種子播種裝置,包含吸取模組、垂直移動模組、橫向移動模組、供料區及播種區,吸取模組包含基座及多個吸取單元,基座設置於垂直移動模組上,垂直移動模組設置於橫向移動模組上,藉此,吸取模組可以進行橫向及垂直方向運動,供料區設置於橫向移動模組垂直下方的第一位置,播種區設置於橫向移動模組垂直下方的一第二位置。本創作採用自動化方式完成播種,可大幅減少人力及縮減播種時間。