The anus is always wet with feces coming out may be caused by anal moisture, rectal prolapse, perianal abscess and other reasons. 1. Damp anus: Damp anus is a symptom that the area around the anus is mainly wet, usually because of the sphincter muscle function abnormality caused by the dilute stool can not be controlled, so there will be feces overflow from the anus, stimulate the skin around the anus and lead to wet. 2. Rectal prolapse: Rectal prolapse is a partial or total downward displacement of the rectal wall, the main manifestations are the feeling of incomplete bowel movement, a feeling of falling, anal incontinence and so on. Rectal prolapse makes bowel movement involuntary, which leads to wet anus. 3. Perianal abscess: Perianal abscess is usually caused by anal gland infection, the abscess breaks from the skin surface, will discharge purulent, mucous secretion, stimulate anal itching, so the anus will feel wet, the discharge of secretion is thought to be feces. If the perianal abscess is broken or cut and drained, and not completely healed to form an anal fistula, the external opening of the fistula will intermittently discharge pus, pus and blood, mucus or even fecal water and other secretions, accompanied by itching and odor, which will also lead to the anus is wet, and it seems that fecal matter comes out. If the patient’s anus is wet for a long time and there is feces coming out, it is recommended to go to the hospital in time for examination, clear diagnosis, and follow the doctor’s instructions for relevant treatment.