Abstract: In order to study the seismic fragility of heat supply pipeline, the method of finite element analysis is adopted to develop a typical model of heat supply pipeline. Selecting some typical seismic waves, by means of numerical simulation, the earthquake response of heat supply pipeline is analyzed. Besides, based on a tristate failure criterion, the failure probability of a single pipe is analyzed and the failure probability of a heating supply system under different earthquake intensities is summarized. According to the assumption of Poisson distribution for pipe damage, the damage number of a certain length of heat supply pipeline is also estimated and compared with the statistical data of seismic damage of pipeline, and the aseismic performance of heat supply pipeline is preliminary evaluated.