The appearance of halitosis is directly related to the strong stomach fire, which not only induces stomatitis, but also leads to intestinal dryness and constipation, causing halitosis. For halitosis caused by stomach fire, traditional Chinese medicine can be used to treat it. Niuhuang Wei Qing Pill has the functions of clearing stomach, purging fire, moistening dryness and relaxing bowels. Not only can it be used to improve symptoms such as gingival bleeding and aphtha caused by stomach fire, but also can improve constipation. After the vigorous stomach fire is improved, the phenomenon of bad breath can be gradually eliminated. Huoxiang Wei Qing Capsule has the effects of clearing heat, eliminating dampness, invigorating spleen and resolving food stagnation. It can not only improve anorexia and dyspepsia, but also regulate halitosis caused by spleen and stomach deficiency fire. Some people suffer from liver fire, bad breath, chest tightness, shortness of breath and greasy symptoms, which can be improved with Longdan Xiegan Pill. Some people have bad breath because of Helicobacter pylori infection, which can be treated with triple therapy, that is, two antibiotics combined with an acid inhibitor. After the improvement of Helicobacter pylori infection, it can not only cure stomach diseases, but also eliminate bad breath.