Once a perianal abscess develops, the earlier the surgery, the better. The principle of treatment for perianal abscess is that conservative treatment is the main treatment when there is no suppuration, but generally when patients are found to have obvious perianal swelling and pain, there is suppuration, which may not be paid attention to in the early stage. If a superficial abscess is palpable, a sense of fluctuation will be felt, but if the abscess is deep, even if it is very serious, there is no sense of fluctuation on the surface. At this time, an experienced doctor can detect the abscess by doing anal finger examination, and can also perform auxiliary examinations, such as rectal cavity ultrasound, perianal ultrasound, and CT examination of the pelvis to detect the abscess. If the pus has already formed, the sooner surgery is performed, the better. If antibiotics are used blindly, the antibiotics chosen are effective for the infected bacteria and can temporarily control the acute inflammation, but they cannot completely cure it, and later on, when the organism’s resistance is poor, there may be another acute attack; if the antibiotics are not effective, it is completely delaying the disease, and the abscess will increase sharply and invade the muscle tissue around the anus, the more damage to the anal function.