Perianal abscesses can grow in various intervals around the anal canal and rectum, as follows: 1, perianal abscess is also the most common perianal abscess, most of the foci are relatively limited, and the internal mouth is usually located in the corresponding anal crypt of the abscess; 2, sciatico-rectal fossa abscess, one side of the sciatico-rectal fossa abscess may spread to the opposite side, forming a horseshoe or half horseshoe abscess, and it should be operated as soon as possible; 3, sphincter gap abscess, and the sphincter gap is not exactly located, but it is common to see the internal mouth located between the inner and outer sphincters. Sphincter space abscess has no exact location of the inner mouth, but after the center of the anal saphenous fossa is common, as the name implies, the location of the abscess is located in the inner and outer sphincter between; 4, rectal submucosal abscess, abscess is located in the lower end of the rectum under the mucous membrane, the inner mouth of the majority of the foci and the lesion in the same location. Rectal palpation can touch the local mucosa soft bulge, and the pressure pain is obvious; 5, pelvic rectal fossa abscess is located in the lower end of the rectum on both sides, rectal palpation can be touched in the lower end of the rectum on both sides of the harder bulge. Most of the perianal abscesses need surgical treatment to be cured, so once the patient is clearly diagnosed, surgery should be performed as soon as possible.