In 2012, China has realized the full coverage of basic old-age pension system,re-adjusted the basic pensions for enterprise retirees, introduced social insurance against major diseases for both urban and rural residents, and standardized workers' life compensation regarding to work-related accident.The whole society paid great attention to the establishment of social security system.Intensive debate has been taken for a long period of time over issues such as retirement age, rate of social insurance fee, old-age pension fund investment, and the innovation on social insurance management. <<