Bad breath caused by upward reversal of stomach qi can be treated with oral Chinese medicine, commonly used medicines include Mu Xiang Shun Qi Pill and Xiang Sha Nourishing Stomach Pill. Mu Xiang Shun Qi Pill has the effect of moving qi and removing dampness, strengthening the spleen and harmonizing the stomach (restoring the function of the spleen and stomach). It is used to treat chest and diaphragm congestion, epigastric (abdominal) distension and pain, vomiting and nausea, belching (hiccups), and nausea (lack of appetite and reduced food intake) caused by dampness and obstruction in the middle of the body, and disharmony between the spleen and the stomach. Xiangsha Nourishing Stomach Pill has the efficacy of warming the middle and harmonizing the stomach (warming the spleen and stomach, harmonizing the stomach and internal organs). It is used for stomach pain and plumpness (stomach distension and discomfort) caused by stomach yang insufficiency and dampness and yin qi stagnation, and is characterized by vague stomach pain, distress in the epigastric region, vomiting of acid, cacophony (stomach feeling similar to hunger, emptiness with burning), discomfort, inappetence, and tiredness of the limbs. At the same time, it is necessary to pay attention to diet, avoid spicy and greasy products, and need to eat a light diet. If you have bad breath, it is recommended to consult a professional physician and standardize the treatment under his or her guidance, and not to use medication on your own, so as not to delay the condition.