By analyzing the stations, lines, and entire networks, the paper determines the change in the passenger flow of the Shenzhen Metro, which was developed into a network in the past several years, and especially how new projects affect the original network. The paper also focuses on the operation results of the third stage of development of the Shenzhen urban railway project, including Line 7, Line 9, and Line 11. At the network level, the relationship between the number (strength) of passengers and the operation of new projects is discussed. At the metro line level, the paper analyzes the peak of the passenger flow of a specific metro line and the differences in the growth characteristics of the passenger flow. At the station level, the number of passengers entering and leaving the station, the number of passengers transferring to another line, and the number of passengers transferring to another transport mode are shown. By analyzing the figure of the passenger flow at all three levels of the Shenzhen Metro, the authors provide suggestions for the future planning of the Shenzhen urban railway network.