Nausea and vomiting in adults may be caused by functional dyspepsia, chronic gastritis, peptic ulcer, acute intestinal obstruction and other diseases, which need to be treated with general measures, medication and surgery. 1. Functional dyspepsia: patients should try to avoid emotional stress, maintain mood and pleasure, follow the doctor’s prescription domperidone, mosapride and other gastrointestinal dynamics of the drug, compound digestive enzymes and other digestive enzyme preparations. 2. Chronic gastritis: patients need to establish a good dietary habits, regular diet, appropriate to reduce eating spicy stimulation, greasy, cold food. Patients need to follow the doctor’s instructions to use omeprazole, rabeprazole and other proton pump inhibitors, as well as magnesium aluminum carbonate and other gastric mucosa protective agents. 3. Peptic ulcer: patients need to pay attention to dietary hygiene, avoid overeating. Patients with Helicobacter pylori infection need to be eradicated, and clinically, four drugs are often used to carry out combined eradication treatment, commonly used are omeprazole, bismuth potassium citrate, amoxicillin and furazolidone, and also need to follow the doctor’s instructions to use teprenone, Rebapatide, and other gastric mucosal protective agents. 4. Acute intestinal obstruction: the treatment of acute intestinal obstruction can be divided into conservative treatment and surgical treatment. Conservative treatment includes fasting and gastrointestinal decompression. If the condition is not relieved by conservative treatment or the manifestation of strangulation has appeared, surgery should be performed as soon as possible. It is recommended that adults with nausea and vomiting should go to the hospital in time and cooperate with the doctor to treat the primary disease.