The 19th CPC National Congress Report has put forward that the national pooling of endowment insurance should be realized as soon as possible.It is a systematic project which involves grasping the internal requirements of national coordination and choosing a plan with less resistance.In choosing the national coordination plan,we should consider the policy solidification risk and adjustment cost brought about by the gradual plan.It is a feasible way to differentiate different methods of insurance treatment according to the time point.There are some obstacles to the national coordination of the basic pension,such as the interest of local governments,reasonable system parameters and the setting of payment standards.It is suggested that historical debts be shared in many ways,social security agencies be built with vertical management,and a multi-level old-age insurance system be established to promote the national coordination of the basic pension.