Objective To evaluate the diagnostic value of endobronchial ultrasound-transvascular needle aspiration(EBUS-TVNA)in hilum of lung and mediastinal lesions.Methods 10 cases of hilum of lung and mediastinal lesions who underwent EBUS-TVNA because vessels pass between the airway and lesions were selected from June 2021 to January 2023,the diagnostic rate and complications were retrospectively analyzed.Results Of the 10 patients,8 traversed the pulmonary artery or its branches,2 traversed aorta or superior vena cava.Specimens were successfully obtained from all patients and 8 of them got definitive diagnosis,including 6 malignancy and 2 benign lesions.The overall yield of EBUS-TVNA for hilum of lung and mediastinal lesions was 80.0%(8/10),the diagnostic sensitivity for malignancy was 85.7%(6/7),and the diagnostic specificity was 100.0%(3/3).The other 2 cases were not diagnosed,1 was diagnosed as bladder urothelial carcinoma by percutaneous lung puncture biopsy,and the other was classified as benign due to the reduced lesion after 6 months of follow-up.All of them had good tolerance to the operation,and no serious complications occurred.Conclusion EBUS-TVNA is a safe and effective technique for the diagnosis of hilum of lung and mediastinal lesions,it can be used as an effective auxiliary method to traditional ultrasound bronchoscopy techniques.