Bad breath after adenoid hypertrophy surgery is caused by protein denaturation, which usually recovers gradually in about half a month after surgery, so no special treatment is needed, and good postoperative care is required. If it is caused by secondary bacterial infection, general treatment and medication can be chosen. 1. General treatment: patients should maintain oral hygiene, brush their teeth on time every day, insist on rinsing their mouths after eating, and then avoid spicy and stimulating foods, try to take light, liquid food to avoid postoperative infection in the wound area. 2. medication: adenoid hypertrophy surgery need to follow the doctor’s instructions to use antibiotic drugs, such as amoxicillin, etc., at the same time with the use of oleander drops, pay attention to antibiotics and oleander drops need to be at least half an hour interval between the use of. Adenoid hypertrophy surgery bad breath, if a long time can not be relieved, it is recommended to go to the hospital in a timely manner, as prescribed by the doctor to take treatment.