If the bad breath is caused by oral diseases, such as gingivitis, periodontitis, you can take drugs such as Niuhuang detoxification tablets, Huanglian Shangqing tablets and Sanhuang tablets. Also pay attention to the morning and evening brush your teeth, rinse your mouth, maintain oral hygiene, do not let the bacterial infection and aggravate the condition, aggravate bad breath. If the disease is caused by internal organs, such as stomach fire, liver fire, etc., you can take drugs such as Huo Xiang Qing Stomach Capsules, Gentian Liver Pills. Also pay attention to a light diet, do not eat spicy, stimulating food, to eat well-digested things. To work and rest normally, maintain a good routine, the body is healthy bad breath will naturally be relieved.