Gastric ulcers and gastroenteritis are not the same disease, but gastric ulcers are relatively more serious than gastroenteritis. Gastric ulcers are very prone to complications such as gastrointestinal bleeding, gastrointestinal perforation, pyloric obstruction, and cancer, mainly because of damage to the mucosa and mucosal muscle layer, erosion, and ulceration. Patients with gastroenteritis generally have milder symptoms and the inflammation is limited to the mucosal layer. Many patients with gastroenteritis have a chronic disease with a longer duration and generally do not have serious complications. The two are also completely different in terms of treatment. Patients with gastric ulcer must be actively and regularly treated, but also need to identify the cause of gastric ulcer, treatment for the cause, pay attention to diet, pay attention to regular review gastroscopy, patients with gastroenteritis need to be regulated in terms of diet and take appropriate drugs to assist.