Gastric cancer runs in families clinically, and the most obvious clinical feature of susceptibility to gastric cancer is family history. Therefore, in the same family, there is a tendency for multiple tumors to cluster in the family, and the incidence is many times higher in the immediate family than in normal people. Clinical research shows that if a patient has a family history, he or she should have regular medical checkups in a timely manner. If a patient’s immediate family members have stomach cancer aggregation, it is better for the patient to have medical checkups twice a year and gastroscopy or barium meal once every six months to prevent the occurrence of early stomach cancer. If the patient’s stomach cancer is detected early and timely treatment is provided, it is very helpful to the patient’s survival and quality of life. It should also be noted that because the patient’s family is hereditary, it is recommended that patients should also make slight adjustments to their diet and daily living habits.