Gastric ulcer and ulcerative gastric cancer are two different diseases, the specific differences are as follows: 1. Gastric ulcer is a benign disease, a chronic inflammatory reaction that forms ulcers in the stomach, which is prevalent in young people and usually caused by poor lifestyle habits such as unclean diet; young patients usually have early chronic pain or regular pain that worsens after eating; 2. Ulcerative gastric cancer is gastric cancer that forms ulcers in the stomach, a chronic, It is a chronic and long-term process, mostly seen in middle-aged and elderly people; patients are accompanied by symptoms such as wasting, malnutrition, enlarged lymph nodes, nausea, vomiting, blood in stool and black stool. The most accurate and reliable way to differentiate gastric ulcer from ulcerated gastric cancer is to clarify the nature and nature of the ulcer through upper gastrointestinal imaging and gastroscopy. Meanwhile, biopsy is also advisable to further clarify the nature and amount of ulcer, and finally determine whether it is a benign ulcer or a cancerous ulcer.