Tianjin Haihe Jizhao Bridge is a three-span continuous steel-concrete composite truss bridge with variable section. It is located in a high-intensity earthquake area with a peak acceleration of 0.15g. According to the structural characteristics of Jizhao Bridge, a new idea is put forward to design the mixed energy dissipation isolation system, which is composed of lead core isolation rubber bearing and mild steel energy dissipation barrier, which can improve the seismic performance of the structure and reduce the engineering cost. This paper mainly introduces the seismic design idea, seismic isolation design method and main technical content of Jizhao bridge.