Abstract: The phase I of Shenzhen subway project was taken as the background of this study. The vibration loads caused by passing trains are obtained with a wheel/track model available in literature. The initial stresses of after excavation are calculated with stress relaxation method. The rational time step and damping of vibration analysis are defined by vibration modes and frequencies obtained with modal analysis. The dynamic responses of overlapping subway tunnels to the vibrations caused by trains running from either directions (namely up and down directions) and vis- a-vis are studied with Newmark implicit time integration method. The stresses, displacements and weak portions in the liner are determined under the vibration loads.