Based on the queuing theory of xi 'an subway line 1 and the bus matching study Major: LogisticsEngineering Name:Chu Tingting Instructor:Yang Maosheng ABSTRACT In this article, prehensive analysis the present situation of public transport of Xi 'an and the opening of xi 'an metro line 1and make sure the effects on the public transport system in xi 'an region,and study of xi 'an metro line 1 with the match problem between the existing public transportation . Xi 'an metro line 1 is the second line of Xi 'an subway system , its opening will make a great relief on the problem about hard to take the bus in the areas of xi 'an. But it brings a lot of passenger s flow and they will cause the great influence to the original bus system .In this article, through scientific analysis and select using the queuing theory to set up reasonable logistic decision-making model about passenger and bus number, This article through scientific analysis, selection of queuing theory to establish reasonable decision making through operations research model between the number of passenger and bus to provide scientific method for matching problem between the future Metro Line 1 and bus. Firstly, the study involved Xi'an metro line 1 would be