The utility model belongs to the test tool field is planted to the tobacco, especially relates to tobacco seeds device of choosing seeds. The seed selection device includes winnowing mechanism and sanitizing means, winnowing mechanism comprises helical pipe soft breeze machine, helical pipe includes kind of the horizontal segment that advances of a body coupling, a spiral section and play kind of a horizontal segment, it is connected with the fan to advance kind of horizontal segment, it is connected with sanitizing means to go out kind of a horizontal segment, department of the underspin portion both sides at spiral section top have been seted up air inlet window respectively and have been aired exhaust the window, it is equipped with into kind of mouth on kind of the horizontal segment to advance, kind of the horizontal segment that advances that advances between kind of mouth and the fan communicates with guide duct one end, the guide duct other end is towards air inlet window. The utility model discloses simple structure, design benefit can effectively reduce the gathering nature of cigarette kind, improves the dispersion effect between the cigarette kind, improves air separation efficiency.