Halitosis is usually caused by spleen and stomach disharmony, liver fire in the stomach, food and dampness, etc. For different causes, you can take Chinese medicines such as Xiangsha Nourishing Stomach Pill, Chaihu Shuohe San, Mu Xiang Shunqi Pill and other Chinese medicines. 1. Xiangsha Nourishing Stomach Pill: It is mainly composed of sand nuts, wooden incense, atractylodes macrocephala, half-summer, poria, fragrant herbs, Chenpi, and Citrus aurantium and other medicines. It has the effect of warming the middle and harmonizing the stomach, resolving stagnation and relieving accumulation, and is mainly used for treating symptoms such as bad breath, malaise, nausea and dry vomiting caused by the disharmony between the spleen and stomach, and liver qi offending the stomach. People who are allergic to the ingredients of this medicine are forbidden to use this medicine, and patients with cold and fever should not use this medicine. 2. Chaihu Shun Liver Essence: It is mainly composed of white peony, Chaihu, Rhizoma Ligustici Chuanxiong, Chenpi, Citrus aurantium, Xiangsui and Glycyrrhiza glabra. It has the efficacy of dispersing liver and regulating qi, and is mainly used for treating symptoms such as distension and pain of the flanks and ribs, frequent sighing, bad breath, belching (hiccups), etc. caused by liver fire that offends the stomach and unruly qi mechanism. People who are allergic to the ingredients of this medicine are forbidden to use it, and patients with Yin deficiency and internal heat should be cautious of using this medicine. 3. Muxiang Shunqi Pill: It is mainly composed of Muxiang, Sha Ren, Citrus aurantium, Pericarpium Citri Reticulatae, Hau Pu, Citrus aurantium, Cangzhu and other medicines. It has the effect of strengthening the spleen and stomach, resolving dampness and reducing turbidity, and is mainly used for treating symptoms such as epigastric (stomach and abdomen) plumpness (stomach distension and discomfort) and bad breath caused by liver and stomach disharmony, and internal stagnation of food and dampness. It is contraindicated in people who are allergic to the ingredients of this medicine, and should be used with caution in patients with yin deficiency and low fluid intake. If bad breath occurs due to turbid qi upward reversal, it should be treated or regulated with medication under the diagnosis of traditional Chinese medicine practitioners, and it is not recommended to take medication on one’s own.