The invention discloses a down feather cleaning and impurity removing device for down feather quilts. The device comprises a working table with supporting legs, a conveying mechanism driven by a motoris arranged on the working table, the tail end of the conveying mechanism is positioned on the working table and is provided with a discharging groove opening, a transition warehouse is connected atthe bottom of the discharging groove opening, a sand guide groove is connected at the bottom of the transition warehouse, a down feather discharging component communicated with the transition warehouse is arranged on one side of the transition warehouse, an air blower is connected on the other side of the transition warehouse through a ventilating pipe, and a cleaning component is arranged on thelower portion of the down feather discharging component. When the device is used, down feather is placed on the conveying mechanism and enters the transition warehouse from the discharging groove opening under conveying of the conveying mechanism, the air blower is started when the down feather passes the transition warehouse, the down feather is blown into the down feather discharging component,enters the cleaning component and can be cleaned, and sundries such as sandstones fall into the sand guide groove under the action of gravity. According to the device, impurities are conveniently removed, and the down feather cannot be damaged when being cleaned.