The symptoms of nausea and vomiting when hungry may be caused by chronic gastritis or Helicobacter pylori infection. Frequent irregular diet or excessive secretion of gastric acid, eating cold, spicy and irritating food will have some effect on the gastric mucosa, and the symptoms of nausea and vomiting may occur in a hungry state due to the stimulation of digestive juices, which can be clearly diagnosed by gastroscopy and C14 test examination. If there is H. pylori infection, it can be eradicated with quadruple therapy, such as gastric mucosal protector omeprazole, bismuth agent Rejuveno, and then two antibiotics amoxicillin and metronidazole for treatment. If you have chronic gastritis, you can be treated with drugs that inhibit gastric acid secretion, such as aluminum hydroxide and cimetidine.