Nausea and stomach pain may occur gastric mucous membrane damage, acute gastritis, etc., you can use acid-suppressing drugs to protect the stomach for treatment, such as omeprazole, Ranitidine and so on. 1. Gastric mucous membrane damage: some patients consume too cold and too hot food will appear nausea and abdominal pain symptoms, this time you can drink a little more hot water, use some acidic gastric drugs, such as omeprazole, ranitidine, etc. for treatment. 2. Acute gastroenteritis: bacterial infection caused by acute gastroenteritis, patients will also appear nausea and abdominal pain, this time you can use antibacterial drugs, such as norfloxacin, levofloxacin, gentamicin and so on. At the same time, you can also apply some acid-suppressing and stomach-protecting drugs to relieve the patient’s vomiting symptoms. The above drugs can not be used without authorization, it is best to treat under the guidance of a pharmacist to avoid adverse consequences.