Abstract: Taxi pick-up area was described as a queuing system based on the GPSS language to establish a simulation model, to find out a new way to improve taxi traffic capacity. Vehicle release officer and passenger release officer were represented by logic switch object, such business logic as taxi producing, taxi entering, boarding, taxi leaving could be reappeared well in computer. The time which spent on the above processes were analysed and by video data. Multi wheel simulation experiments were carried out. Quantitative analysis was executed to find out how the traffic capacity are affected by the berth quantity and the fluctuation of boarding time. Two conclusions were drawn through simulation experiments：1. Quantitative relation between berth quantity and system capacity. 2. Equipped with waiters to help carry bulky luggage passengers could improve traffic capacity 15%.

Key words: traffic capacity, scale of boarding zone, Monte Carlo simulation, taxi departure queue