Floor system is an important part of assembled building structure system.The study of the mechanical properties of floor system in plane is of great significance to the overall analysis of the structure.In this paper,the existing research on in-plane mechanical properties of assembled floors at home and abroad is introduced,their characteristics and commonalities are analyzed,the research on in-plane mechanical properties of assembled floors with different materials at present stage is expounded,and the key problems and development directions to be further studied are discussed,which can provi...