To repair the gastric mucosa should reduce the intake of food that causes damage to the mucosa, while taking oral omeprazole, aluminum phosphate gel, bismuth pectin medication. The gastric mucosa is a protective mucosa on the stomach wall, which can secrete mucus to isolate gastric acid from the stomach wall and prevent stomach diseases. When the gastric mucosa is damaged, gastric acid will be more likely to stimulate the stomach wall and induce gastritis, gastric ulcer and other diseases. For patients with damaged gastric mucosa, they should pay attention to their dietary care and avoid eating foods that are too cold, too hot, too hard or too coarse, which will cause damage to the gastric mucosa when they enter the stomach and are not conducive to the repair of the gastric mucosa. First of all, omeprazole can inhibit the secretion of gastric acid, after the secretion of gastric acid is reduced, it will not cause damage to the gastric mucosa. Secondly, aluminum phosphate gel is an antacid drug, which can neutralize gastric acid and reduce the damage to mucosa caused by gastric acid. Finally, bismuth pectin can be attached to the gastric mucosa, which can isolate the gastric acid and pepsin and promote the cell repair of the gastric mucosa.