RESUMEN
Objective To explore the value of cyfr21‐1 ,NSE and CEA detection applied in early diagnosis of lung cancer and i‐dentification of pathological types of lung cancer .Methods Lung cancer patients (observation group) and benign lung lesions pa‐tients(control group) were selected from our hospital ,and then they cyfr21‐1、NSE and CEA value were compared and analyzed .Re‐sults The cyfr21‐1 ,NSE and CEA value of observation group were higher than control group ,and three indicators showed positive markers ,the difference was statistically significant (P<0 .05);Combined detection of three tumor markers specificity was highest , and compared to individual detection ,there were significant differences (P<0 .05);Cyfr21‐1 ,NSE and CEA levels had a certain gap in different pathological types of lung cancer patients .Conclusion Tumor markers cyfr21‐1 ,NSE and CEA have a certain reference value in the early diagnosis of lung cancer and lung pathology identification .