When the poor gastric function with bad breath is caused by H. pylori, it can be treated with gastric quadruple therapy. If it is caused by indigestion, dietary habits can be adjusted, and when it is serious, drugs such as mosapride can be taken under the guidance of a doctor for intervention. 1. Helicobacter pylori infection: the presence of Helicobacter pylori infection will lead to poor gastrointestinal function, accompanied by bad breath, such cases should be under the guidance of the doctor to use the quadruple therapy to intervene, and at the same time to strengthen the exercise, enhance their own resistance. 2. Dyspepsia: Dyspepsia can also cause the body to appear this kind of situation, generally can be relieved through dietary regulation, to light diet, avoid spicy, stimulating food intake. If the symptoms are more serious, drugs such as mosapride can be taken to intervene. This type of drug may cause the body to experience dizziness, nausea and other adverse reactions, allergy to drug components or severe liver dysfunction is prohibited. The same disease, the patient’s physical condition is different, different stages of the disease, the treatment method is different, should be standardized under the guidance of the doctor.