Stage A1 gastric ulcer indicates that it is in the acute stage, endoscopic gastric mucosa shows that the ulcer mucosa is congested and edematous, with yellow and white thick moss at the bottom, and it needs to be eradicated if it is HP infection. When the gastroscopic examination is clear that the ulcer belongs to the A1 stage, the carbon 13 or 14 breath test should be further improved to determine whether the ulcer is caused by HP infection, and if the ulcer is caused by HP infection, it should be treated with eradication of HP. Clinically, the quadruple regimen of 1 proton pump inhibitor + 2 antibiotics + a bismuth agent is commonly used, such as omeprazole + amoxicillin + clarithromycin + bismuth potassium citrate. In addition to this, gastric mucosal protectors can be used to relieve symptoms, such as teprenone. Avoid drinking coffee and strong tea as well as quitting smoking and alcohol in your life. The use of medication should be under the guidance of the doctor, avoid unauthorized use of medication.