Lung adenocarcinoma is generally not hereditary, but people with a family history of lung adenocarcinoma have a higher rate of the disease than those without a family history. Lung adenocarcinoma is a malignant tumor disease, but it is not a hereditary disease, only that people with a family history of lung adenocarcinoma may have certain genetic susceptibility to lung adenocarcinoma, and this susceptibility generally refers to the stimulation of the same cancer-causing factors, and people with a family history of lung adenocarcinoma are more prone to develop lung cancer in general. Therefore, people with a family history of lung adenocarcinoma are clinically monitored as a group with a high incidence of lung cancer. It is recommended to do low-dose chest CT examination every year, together with the examination of several lung cancer tumor indicators such as carcinoembryonic antigen and glycan antigen 125 in the blood, in order to detect lung cancer in time and give early treatment.