According to Chinese medicine, the evil of summer heat and dampness is more prevalent in summer, and the fire in the body is more vigorous, which easily leads to the occurrence of perianal abscesses due to the combination of internal and external evil. In summer, the temperature is higher, the rest time is relatively less, the body is easily fatigued, the appetite is relatively poor, and the body’s resistance is weakened, which provides a certain basis for the occurrence of infectious diseases; in summer, food deteriorates quickly, and people are prone to acute bacillary dysentery and gastroenteritis after mistakenly eating deteriorated food, which leads to perianal infection and causes perianal abscesses; in summer, sweating is more frequent, and the compensatory absorption of water by the large intestine is enhanced. In summer, sweating is more frequent, and the compensatory absorption of water in the large intestine is increased, which makes it difficult to defecate, and sometimes it can rub the mucous membrane of the anal canal skin, especially the anal sinus, leading to infection and pus; in summer, sweating is more frequent and the anal area is more humid, which is also a reason for the increase of perianal infection.