The hazards of adenoidectomy mainly include decreased immunity, risks during surgery and some postoperative complications. 1. Decrease in immunity: adenoids belong to the body’s immune organs, there is a certain immune defense, adenoidectomy will cause a decrease in immunity in the short term, but there is no significant difference in the long-term immune function after the removal of the changes, so there is no need to be overly concerned. 2. Risks during adenoidectomy: During adenoidectomy, there may be risks of bleeding, damage to surrounding tissues, mucous membrane injury, aspiration and choking. 3. Postoperative complications: postoperative infection and bleeding in the operative cavity due to improper care, otitis media due to damage to the surrounding tissues, proliferation of stumps due to repeated infections, unsatisfactory improvement of symptoms requiring further investigation of other causes, etc. Once adenoid hypertrophy occurs, the patient should consult the hospital in time, and make a treatment plan under the doctor’s comprehensive evaluation. If surgery is needed, the patient should follow the doctor’s instructions and have regular checkups after the surgery to avoid adverse consequences.