Land designated for construction is a key production factor for the construction of national fitness spaces and facilities. Against the background of strict state control of the total amount of construction land， redevelopment of stock construction land has become a new perspective for supply of land to build national fitness spaces and facilities. The principles， theories， practices and models of redevelopment of stock construction land to build national fitness spaces and facilities were discussed through comprehensive uses of literature data， logical analyses and comparative analyses. The study concludes that the redevelopment of stock construction land to build national fitness spaces and facilities should follow the principle of people''s interest， sustainable development， high-quality and equality， and a systematic whole. The theories include land title theory， land planning theory， land economy theory and land use theory. The practices include the redevelopment of marginal land， idle land， wasteland and discarded factory space. The models include government-led， market-led， planning-led， self-directed， and mixed ones.