The invention relates to the technical field of three-dimensional spatial data storage, in particular to a three-dimensional spatial data storage and management method based on a file system. An object-oriented method and a through based on the file system are adopted for the design and the development of the three-dimensional spatial data storage and management method used to uniformly store thespatial data and the attribute data of a three-dimensional spatial object entity in a file and effectively obtain the spatial data and the attribute data through a file stream technology. The thoughts of classified storage, incremental superaddition, index management and real-time scheduling are adopted to realize core technologies, such as overground and underground as well as indoor and outdoorthree-dimensional spatial data integrated management, high-efficiency three-dimensional spatial indexing, dynamic scheduling and the like. The invention has the advantages of high-efficiency processing and flexible management and can be compatible with a large spatial database system to supply basic-level support for the management and the application of a three-dimensional spatial database.