The causes of anal dampness include: 1, anal dampness may be due to more perianal sweating; 2, it may be caused by perianal diseases, many perianal diseases can lead to anal dampness, such as hemorrhoids, after the hemorrhoid body is large, it will prolapse, thus affecting the closure of the anus, resulting in the leakage of intestinal fluid, anal dampness. Enteritis is also an important cause of anal dampness. When there is inflammation in the intestines, too much intestinal fluid is secreted, which will exude a little from the anus and lead to anal dampness; 3. Infectious diseases of the perianal area, such as perianal abscess and anal fistula, will lead to anal dampness due to exudation of pus and secretions; 4. Anal fissures can lead to anal dampness. Because of the anal fissure, local inflammatory stimulation will have a little secretion. There are many causes of anal dampness, and the specific cause needs to be examined by a specialist to determine if there is a primary disease. The primary disease should be actively treated so as to relieve anal dampness.