Abstract: Real-name verification and security check are the two most time-consuming steps in passenger arrival process. Taking the example of passengers entering the Guangzhou South Railway Station on Guangzhou-Zhuhai Intercity Railway, a Poisson distribution queuing model of “first come first serve” rule based on the site survey data is established, then the number of passengers in line is calculated. Aiming at “zero queuing access”, AnyLogic software is applied to simulate and analyze the influence of increasing security-check equipment amount and upgrading equipment service efficiency on passenger queuing line. The simulation results show that at least 4 security-check machines should be increased to achieve the goal of “zero queuing access” during the rush hours at Guangzhou South Railway Station. At this moment, the service limit for passengers on Guangzhou-Zhuhai Intercity Railway is up to 1800 people-hour. Compared to the increased security-check machines, the increase of security-check efficiency has limited improvement of passenger queuing line.