Objective: Traditional method of closing bronchial stumps after lobectomy was whole layer suture by hand or by stapler. Little is known about the ligated bronchial stump following lobectomy. To evaluate the characteristics of ligation method for closing bronchial stumps. Methods: In this study 90 lobectomies on 15 mongrel dogs and 75 bronchial stump models on fresh cadaver bronchus were performed. Multivariables comparison experimental studies were made on the results of three different closing methods: simple ligation,manual suture and stapling. Results: In the ligation group, the operation time was significantly shortened (P＜0.01). The depth of stump cavity between ligation group and suture group was of no difference significantly (P＞0.05). The resistance against intrabronchial pressure was greater in the ligation group than in the suture group (P＜0.01). Pathological studies illustrated earlier healing of mucosal membrane with milder inflammatory reactions.In clinical practice, 121 lobectomies were successfully performed with simple ligation of the stumps.Conclusion: Simple ligation is a safe, reliable, simple, and applicable method for closing bronchial stump following lobectomies.