Malignant gastric ulcers and so-called gastric cancer are among the common malignant tumors. Early gastric cancer can be asymptomatic over only symptoms of indigestion. Patients show weakness and decreased appetite, and the following symptoms gradually appear with the development of the disease. Epigastric pain is the most common symptom, which only shows discomfort of fullness and vague pain in the epigastrium at the beginning. The gastric ulcer type is seen as a rhythmic pain similar to ulcer disease, which can be temporarily relieved after oral proton pump inhibitors, but later the pain will persist and become obvious, with significantly increased loss of appetite, weight loss, accompanied by weakness, anemia, nausea and vomiting. If pyloric obstruction occurs, the patient will vomit; pancreatic cancer patients will have difficulty swallowing, and the amount of bleeding from vomiting blood and black stool is usually not large.