Nausea and vomiting, the first thing to do is to find the cause of the disease, in order to treat the symptoms. If it is caused by gastritis or gastric ulcer, you can take omeprazole enteric capsule, morpholine, colloidal bismuth subcitrate and other drugs. If it is caused by viral hepatitis, it can be treated with antiviral drugs, hepatoprotective drugs and antiemetic drugs. If the nausea and vomiting is caused by intracranial hypertension, it can be treated with 20% mannitol infusion. If the nausea and vomiting is caused by bacterial infection, anti-inflammatory treatment with sensitive antibiotics can be used. Nausea and vomiting can also occur in early pregnancy and needs to be correctly identified.