Easy-cleaning and backflow-prevention artificial anus

The invention provides an easy-cleaning and backflow-prevention artificial anus. The artificial anus comprises a retainer ring. The retainer ring is symmetrically provided with a connecting ear, and along hole for piercing a binding tape is arranged on the connecting ear. A plurality of sealing lips are arranged on one side of the retaining ring facing the human skin, and a fixing structure is arranged on the outward side of the retaining ring. One end of the sealing lip is connected with the retaining ring, and the other end is inclined to the outside, and a supporting body is arranged between the sealing lip and the retaining ring; the central hole of the retaining ring is a variable diameter structure; and the inner diameter thereof gradually decreases from the side close to the skin to the outside. The easy-cleaning and backflow-prevention artificial anus has the advantages of being simple in structure, effectively optimizing the use reliability of the artificial anus by optimizing the structure of the in