Although the reform of social security system in China has made for more than ten years,it’s effectiveness is not ducky.The governments,the enterprises and the individuals,the three sides related to this system have not taken the benefits from the present order.Are the problems in the field of social security related to contrivance of the order or to practical operation?Are the problems in the basic thoughts or in the concrete methods?After answer the above two problems,the team of the project has made a new plan of the reform,Basic concordancy Social Security System.