High complex perianal abscesses usually drop out around 14 days after surgery. A high grade complex perianal abscess is an infected abscess that forms around the anus, rectum, and anal canal, mainly as a result of a bacterial infection following a sinus infection or sebaceous gland infection. When a perianal abscess forms, some patients may develop a fistula that communicates with the anal canal and has two or more fistulas located above the anal sphincter. High complex perianal abscess need to perform surgical incision full drainage, but in order to ensure that the anal sphincter function injury is reduced, and to achieve a one-time cure need to form a fistula high perianal abscess need to perform the hanging line treatment, borrowing the hanging line therapy chronic cutting fistula, so that neither affects the function of the anal sphincter, but also to play a full drainage. This hanging line after surgery, generally about 14 days will automatically fall off, if not fall off to the hospital to check the surgeon to give the removal of the general course of 14 days is enough. If there is a high complex perianal abscess, it is recommended to go to the hospital in a timely manner, follow the doctor’s instructions and actively give treatment to avoid delays.