Bad breath with tonsil stones is usually caused by food debris as well as bacterial colonization. 1. Tonsil stones are usually associated with bacterial infections, inadequate oral hygiene, age and other factors, tonsil stones are mostly found in the crypts on the tonsils, the tonsil folds of food debris, detached epithelium fermentation caused by a class of substances like stones, resulting in bad breath phenomenon. 2. In addition to bad breath, tonsil stones may also cause foreign body sensation in the pharynx, difficulty in swallowing, difficulty in opening the mouth and other symptoms. It is recommended that patients with tonsil stones should go to the hospital for examination in time and have them removed under the guidance of the doctor. Patients with tonsil stones, in their daily life, should pay attention to keep the oral area clean and brush their teeth regularly.