In the process of creating a conservation-oriented society,housing is also following the pace of refiningand economizing.The intensive residential indoor space, to a large extent,can save social resources, and ease the housing problems for the social vulnerable groups at the architecture level.In the design research of the ultimate residence and space intensive mode,the paper dates back to the domestic and foreign small residential design cases,and further explores the basic strategy and the processing technique of indoor space design of limit residence.The paper discusses how to design to meet the living space of a single person or more from the aspects of plane, vertical space and variable furniture,and then puts forward modular design,commercialization and industrialization of the tiny space, without influencing the living comfort.The construction of“7m2” miniresidential verifies the feasibility of the efficient use of minimal space,and the research of indoor space intensive strategy will play a positive role to the construction in the conservation-oriented society.