The seismic response of subway station and the tunnel joint structure in soft soil area inTianjin city were researched by using the finite element analysis software of ANSYS.Taking HepingRoad subway station for example, 3 D calculation model was established and time-history analysiswas carried out.The focal point of stress on the joint structure was found out and the interaction influ-ence between the tunnel and the station were analyzed.The results show that, firstly, horizontal andvertical direction seismic waves will affect the principal stress of the station and the joint structure.Secondly, horizontal seismic mainly has influence on horizontal displacement in the joint sectional.Vertical seismic dominates the vertical displacement.The earthquake makes the vertical displacementgreater than horizontal displacement.