The invention discloses a down feather screening device. The device comprises an air pump, a motor, a pneumatic retractable rod, a bracket, atomizing nozzles, a fixing rod, a vibration motor, a vibration box, a sieve net, a water tank, a drying box, an air compressor, a stirring motor, a water pump, a winch board, an air heater, a connecting frame, a miniature motor, a first screw rod, a fixture and a second screw rod; the motor and the second screw rod are utilized to control the movement of the fixture in the horizontal direction to make the fixture enter the drying box; down feathers are introduced into the drying box, a stirring motor, a stirring stick and the winch board are utilized to prevent the down feathers from accumulating at the bottom of the drying device, and drying is conducted more fully; a pressure gauge and a safety valve are utilized to control the safety of the drying box, and a filter net is utilized to prevent the down feather or impurities from entering the equipment. The down feather screening device is easy to operate, the down feathers can be screened to remove impurities and dust particles and then cleaned and dried, the production efficiency is improved, the resources are saved, and the cost is reduced.