The purpose of this study was to explore the detection value of seven autoantibodies (TAAbs): p53, PGP9.5, SOX2, GBU4‐5, MAGE A1, CAGE, and GAGE7 and three tumor markers: CYFRA21‐1, NSE, and SCCA in the diagnosis of lung cancer. The gene discussed is TP53; the disease is neoplasm.