Abstract: On January 14, 2015, the State Council promulgated the (2015) No. 2 Decision on the Reform on Insurance System for the Staff of the Government Organizations and Institutions, which has broken decades of the "Double Track System". Based on the analysis of historical reasons of the "double track system" and the subsequent social contradiction, this paper points out that the pension insurance in China should be composed of basic pension insurance, compulsory occupational pension, and personal saving-based pension insurance in accordance with the experience and achievements that the reform had made on enterprises pension insurance system in more than two decades.