叙述了铁路房建部门推行“周期承包”模式，自主经营、自负盈亏、明晰产权、与投资主体建立资产回报关系、达到与主业分离、实现资产经营目标的“周期承包”操作方法。 This paper describes the “cycle contract” operation method that the railway housebuild department implements the “cycle contracting” mode of “cycle contracting”, operating independently, assuming sole responsibility for profits and losses, clarifying the property right, establishing the relationship with the main body of the return of assets, separating from the main business and achieving the target of asset management.