Generally speaking, gastric ulcer will not only cause stomach pain, abdominal distension and decline in quality of life, but also cause serious complications, such as gastric perforation or duodenal perforation. Gastric perforation and duodenal perforation are very serious diseases in clinical gastroenterology, which can lead to shock and even death of patients. In addition, it can also cause gastric cancer. A very important factor in the clinical occurrence of gastric cancer is that gastric and duodenal ulcers can not be effectively treated for a long time, and some cell changes will occur in gastric mucosa, which will lead to canceration and malignant transformation over time, and this canceration and malignant transformation is the basis of gastric cancer and duodenal cancer. Therefore, gastric ulcer and duodenal ulcer are the most common pathological changes in clinic, and they are also the causes of serious consequences. The above questions are for reference only. Please refer to the doctor's face-to-face consultation for specific medication and treatment.