Abstract: In recent years, the earthquakes occurred frequently in all over the world, the seismic reliability of calculation methods based on building structures more security is concerned. According to the requirement of current seismic code in our country, this paper analyses the seismic reliability of the same reinforced concrete column based on ultimate bearing capacity and displacement method by using Monte Carlo Method theory, and compares the change of seismic reliability on frame column under different eccentricity. The calculation result shows that the value of seismic reliability based on displacement under the same condition was small; The structural reliability under the influence of earthquake did not completely depend on the strength of component, which was also related with the deformation ability of component; The method of displacement control seismic reliability was more reasonable.