The phlegm is related to the local inflammation after tonsil surgery, which can be treated by applying phlegmatic drugs, nebulizing inhalation and applying antibiotics. 1. Application of phlegm removing drugs: commonly used drugs in clinic include Ambroxol Hydrochloride, Carbocisteine Oral Liquid, Bromhexine Hydrochloride, etc., which can dilute phlegm and promote phlegm discharge. 2. Nebulized inhalation: Budesonide suspension, ipratropium bromide solution and other drugs can be used for nebulized inhalation to reduce local inflammatory reactions, reduce inflammation and swelling. 3. Antibiotics: If you have sputum all the time after tonsil surgery, you can choose antibiotics, such as cefaclor, amoxicillin clavulanate potassium, etc. to control the infection and alleviate the symptoms of sputum. If you have a lot of phlegm after tonsil surgery, it is recommended that you actively consult a doctor for a systematic examination to clarify the causes of phlegm, and follow the doctor’s instructions to standardize the use of medication and treatment.