Abstract:〔Abstract〕 Objective To investigate the clinical characteristics and risk factors of venous thromboembolism (VTE) in patients with lung cancer, and analyze the impact of VTE on the survival prognosis of patients with lung cancer. Methods The general data and laboratory indexes of lung cancer patients in the cancer center of the First Affiliated Hospital of Jishou University from October 2019 to October 2020 were collected. According to the presence or absence of VTE, patients were divided into VTE group and non-VTE group. Logistic regression and Kaplan-Meier curve were used to analyze the risk factors of VTE in patients with lung cancer and the effect of VTE on the survival of patients with lung cancer. Results A total of 300 patients with lung cancer were enrolled in this study, and 64 patients developed VTE, with an incidence of 21.3 %. Multivariate logistic regression analysis showed that lung adenocarcinoma, stage Ⅳ, white blood cell count, antithrombin Ⅲ (ATⅢ), D-dimer and venous catheterization were risk factors for VTE in patients with lung cancer (P < 0.05). Among 242 lung cancer patients who received first-line medical treatment, 56 patients developed VTE. The median progression-free survival (mPFS) of patients with VTE and without VTE were 7.8 months and 9.3 months respectively (P = 0.035). The median overall survival (mOS) was 15.8 months and 17.1 months respectively (P = 0.056). Subgroup analysis showed that in 82 patients with non-small cell lung cancer (NSCLC) with or without VTE, the mPFS was 10.0 months and 18.8 months (P < 0.001), and mOS was 22.7 months and 25.8 months (P = 0.014), respectively. Conclusion Lung adenocarcinoma, stage Ⅳ, white blood cell count, ATⅢ, D-dimer and venous catheterization are risk factors for VTE in patients with lung cancer. VTE events can increase the risk of death in patients with lung cancer. The relationship between lung cancer driver gene mutation status and VTE is worthy of further study.