The abdominal pain of gastric cancer is not necessarily stomach cancer. It may be dull pain or distension, and there are often accompanying symptoms, such as abdominal distension, nausea, poor appetite, anemia, emaciation, malnutrition, black stool, etc. If patients have stomach pain or highly suspect the existence of malignant tumor of stomach, they need to go to hospital in time and cooperate with doctors to improve electronic gastroscopy and pathological biopsy, which can only clarify whether it is stomach cancer or benign stomach disease. If it is stomach cancer, you need to cooperate with the doctor to give active treatment, such as surgery, radiotherapy and chemotherapy. If it is benign gastric disease, you need to cooperate with the doctor to give oral medication in the outpatient clinic, such as oral acid suppressant combined with gastric mucosa protector, and you need to consult the specialist for details.