To quantitatively analyze the level of service(LOS) of taxi boarding areas at airports,passengers’ questionnaires were implemented to evaluate LOS of individual components and overall LOS,which could assess the key influence factors.Each LOS of giving queue time was evaluated based on user perceptions.Regression models were adopt to formulate the evaluation model of overall LOS and the mathematical model between LOS and the queue waiting time,which were used to determine the LOS categories of taxi boarding areas.By analyzing the questionnaires data of Shanghai Hongqiao Airport,it is shown that the four factors: queue waiting time,guiding signs,queue walking distance and organization management,are the obvious influences for LOS of taxi boarding areas,and LOS could be partitioned five categories.The research results could make the administrators know the primary components which should be paid more attentions,and provide the quantitative measurement standards for the planning and design of taxi boarding areas at airports.