1.Treatment before abscess formation Same as acute tonsillitis, adequate antibiotics must be given intravenously to control the spread of inflammation, stop the formation of abscess and prevent complications. Penicillin with procaine or gentamicin can also be used for local closure, which has anti-inflammatory and pain-relieving effects. 2.Puncture and pus extraction Through puncture, the site of abscess can be clarified whether abscess has been formed, and the purpose of treatment is also achieved. Under mucosal surface anesthesia of 0.5%~1% dicaine, select the most elevated and most softened part of the abscess, try to control the needle, pay attention to the orientation, do not pierce too deep, so as not to accidentally injure the large blood vessels of the parapharynx. There is a feeling of emptiness when the needle enters the abscess cavity, and pus is withdrawn when the needle is withdrawn. Try to pump the pus, then the needle does not move, change the empty needle, and rinse with antibiotic solution. 3.Incision and drainage Incision and drainage are made at the abscess puncture site under local anesthesia. If the incision site cannot be determined, an imaginary horizontal line is made from the root of the uvula; an imaginary vertical line is made from the lower end of the free edge of the tongue and palate arch, and the intersection point of the two lines is slightly outside, which is the suitable place for making the incision. The incision is 1-1.5 cm long, and the mucosa and superficial tissues are incised (not too deep), and the soft tissues are separated layer by layer with a vascular clamp in the posterior and lateral direction along the muscle fibers to reach the pus cavity and drain the pus. After the operation, no drainage strip is placed, and the incision is dilated and the pus cavity is flushed once a day, which can be healed in a few days. 4.Tonsillectomy in abscess period Generally, the surgery can be performed only 2-3 weeks after the acute inflammation of tonsils has subsided. However, in the case of peri-tonsillar abscess, tonsillectomy can be performed after the diagnosis is confirmed or a few days after the incision and drainage of pus, under the control of sufficient amount of antibiotics. At this time, the tonsillar peritoneum is separated from the tonsillar fossa by the pus, so it is easier to peel off the tonsils, with less bleeding and less pain. After tonsillectomy, its pus cavity is completely open to drain the bottom of the pus, which is easily cured. Removing the lesion as early as possible can reduce the occurrence of complications and also avoid the pain of re-operation and the difficulty of peeling off the tonsils due to scar formation.