Stomach pain is not necessarily stomach cancer. Stomach cancer cannot be diagnosed by clinical symptoms alone, and there are many different causes of abdominal pain. The common ones are diseases of digestive system, such as acute gastritis, chronic gastritis, peptic ulcer, gastric cancer, as well as pancreatitis, cholecystitis, appendicitis, intestinal obstruction, gynecological diseases, urinary system diseases, etc. Do not be too nervous when patients have abdominal pain, it is not necessarily malignant tumor. Most of the clinical manifestations of stomach cancer are irregular abdominal pain, accompanied by nausea, vomiting, regurgitation, loss of appetite, and also black stool, bloody stool, emaciation, anemia and other symptoms. If you have high suspicion of stomach discomfort, you can go to the hospital and cooperate with the doctor to examine the electronic gastroscopy and, if necessary, to take biopsy under the microscope, and only through pathological examination can you clarify whether there is stomach cancer.