Abstract: Taking the train operation vibration characteristics on testing line of certain metro depot as the main research object, the vibration acceleration response of track area, ground area and indoor area caused by train operation at different speeds is measured. The vibration propagation characteristics are systematically analyzed in time and frequency domain. Results show that vibration in track area is mainly composed of high frequency component, which decays rapidly through propagation process. With the increase of running speed, the vibration intensity of each measuring point shows an overall increasing trend, but the ground or indoor measuring points are in the frequency range lower than 63 Hz, the impact of train speed on vibration intensity is small; the time-varying analysis of Z-vibration level is carried out on the rail vertical acceleration response to obtain information about train formation and train speed. The impact of analysis time on the maximum Z-vibration level can reach 5 dB. It is suggested that the train test speed on testing line in daytime should not exceed 45 km/h, and the distance between test line and residential area should not be less than 30 m in subsequent construction.