Gastric sinus erosion may lead to gastric cancer, but it takes a long time to develop from sinus erosion to gastric cancer, so patients should not be too nervous. If the doctor finds that there is erosion in the mucosa of the gastric sinus or other parts of the gastric mucosa during electrogastroscopy, biopsies of the erosion will be routinely taken and sent for pathological biopsy to determine whether there is cancer, and if necessary, preventive surgery will be performed. Most sinus erosions are inflammatory lesions, but patients need to cooperate with their doctors in the treatment of the disease with medications, such as acid suppressants combined with drugs that promote mucosal repair. If sinus erosion is present, it may develop into gastric ulcer if left untreated, and gastric ulcer can easily complicate gastric cancer, so it should be taken seriously.