Bad breath that smells like rotten meat is usually caused by mouth ulcers and gingivitis. 1. Mouth ulcers: usually due to the oral cavity on the palate and tongue and cheeks and other parts of the mucous membrane appear round or oval painful ulcers, manifested by congestion, redness, swelling, pain, low-grade fever, fatigue, halitosis and other symptoms, which will be rotten meat taste of the bad breath phenomenon, you can use chlorhexidine gargle, cediriodine tablets, mouth ulcers and other drugs for treatment. 2. Gingivitis: usually due to plaque on the surface of the teeth caused by non-specific inflammation of the soft tissues of the gums, manifested in bleeding gums, bad breath, gums, gums, gums, gums, gums, dark red, gingival hyperplasia and other symptoms, which will appear rotten meat flavor of the bad breath phenomenon, you can use hydrogen peroxide solution, chlorhexidine, iodine preparation and other medications for treatment, you need to be cleaned to remove the irritating factors. Halitosis with rotting meat flavor first to determine the cause of the disease, generally can be treated with medication, when the problem is serious need to go to the hospital in a timely manner, listen to the doctor’s advice for treatment, the use of drugs need to follow the doctor’s instructions.