The invention discloses a sorting and collecting device for medical waste. The device includes a frame, a collection bucket, an ejection mechanism and a clamping and transporting mechanism. The conveying motor and the conveying screw rod are connected in rotation with the frame, and the conveying motor drives the conveying screw rod to rotate. The block is provided with a conveying thread sleeve, the conveying thread is sleeved on the conveying screw rod, and the conveying thread sleeve is threadedly connected with the conveying screw rod. The method adopts a, delivery of medical waste; b, classification of medical waste; c, cleaning of medical waste, a total of three steps are adopted to simplify the process of classified collection of medical waste, facilitate the classified collection of medical waste and later transfer treatment, and improve the efficiency of classified collection of medical waste Efficiency improves the effect and accuracy of medical waste classification and collection, effectively avoids the wrong placement of medical waste, and facilitates the supervision of medical waste.