Gastrointestinal mucosal damage is mainly seen in Helicobacter pylori infection, and may also be caused by diet, it is recommended to be treated by drugs, diet and other ways. 1. Helicobacter pylori infection: For patients diagnosed with Helicobacter pylori infection, it is recommended to remove Helicobacter pylori through quadruple therapy, i.e., quadruple therapy, i.e., 1 kind of proton pump inhibitor + 2 antibiotics and 1 kind of bismuth agent such as Omeprazole, Clarithromycin, Metronidazole, Bismuth Potassium Citrate and so on. You should also take some drugs that protect the gastric mucosa and inhibit gastric acid, such as aluminum thioglycollate, ranitidine, lansoprazole, omeprazole and so on. 2. Due to diet: some patients often smoke, drink alcohol, eat stimulating food, drink coffee, eat too hot, too cold food, resulting in gastrointestinal mucosal damage. It is recommended that patients usually try to eat liquid food, such as pumpkin porridge, millet porridge, black rice porridge, etc., which can play a gastric effect. Avoid spicy stimulation, greasy food, for drinks and cold food should also be well controlled. Patients are advised to eat light and easily digestible food to avoid aggravating the symptoms of gastrointestinal mucosal damage. If necessary, patients are advised to confirm the diagnosis of the disease through gastroscopy. Please do not take medication on your own to avoid delaying the condition.