【Objective】To study the vibration characteristics of subway stations caused by the entry and exit of three-line parallel subway stations.【Method】Taking a third-line parallel transfer subway station in a domestic city as the research object,the vibration characteristics and propagation rules of the station were analyzed based on the field measured data.【Results】Affected by the completion and operation of the line,the vibration response of each platform in the station varied greatly. Under the inbound condition,the average Z vibration levels of platforms 1,2 and C were 81.9,91.4, 61.7 dB,and the main frequency bands of platform 1 and 2 were 75~125 Hz. Under outbound conditions,the average Z vibration levels of the three platforms were 82.7,93.8, 63.7 dB,the main frequency band of vibration of platforms 1 and 2 is 50~100 Hz, while the vibration response of platform C is concentrated within 50~60 Hz under both conditions.【Conclusion】In most measuring points in the station, it can be found that the vibration under outbound conditions is greater than that under inbound conditions, and the maximum difference is about 2.5 dB. After the vehicle-induced vibration is transmitted to the ground floor, it will first produce a certain attenuation, and when it is transmitted to the ground floor, it will produce amplification, and the vibration is about 3.6~5 dB. The attenuation of vehicle-induced vibration transmitted in the station building is small, and the vibration attenuation mainly depends on the soil layer, and the vibration attenuation is about 0.53 dB/m. The research results can provide a reference for vibration prediction, vibration comfort evaluation and vibration reduction design of similar structures, subway stations and buildings with parallel access to multiple lines.