Stomach cancer is indeed hereditary in some patients, but not in all. When a patient’s family members are diagnosed with hereditary stomach cancer, there is no way to prevent it in general. The main thing is to have regular medical checkups, early screening and stop bad habits such as smoking and drinking. If there are multiple patients with stomach cancer in the family, such as siblings in front of oneself or parents or immediate ascendants, it is necessary to be alert. It is important to pay attention to stomach physical examination in daily life and may require regular stomach endoscopy for early cancer occurrence and detection. By this method, it may reduce the risk of death and prolong the patient’s survival. For this group of patients with family history of gastric cancer, regular screening work is needed so as to ensure early treatment once detected and better treatment results can be achieved.