With the increase of landscape bridges, the combined setting up of vehicular bridge and pedestrian bridge is more and more. According to the actual engineering cases, the seismic analysis model of vehicular bridge and pedestrian bridge is established. Four working conditions of vehicular bridge using the velocity locking support and friction pendulum, and pedestrian bridge using the fixed support and high damping rubber support are compared and analyzed. The combined seismic design problems of vehicular bridge and pedestrian bridge are considered. The calculation result shows that the vehicular bridge using the velocity locking support and the pedestrian bridge using the high damping rubber support at the same time can better meet the combined stress of vehicular bridge and pedestrian bridge, and also can make the pier columns uniformly stressed and reduce the stress of the pier columns.