This paper described the origin and development of NoSQL,compared the advantages and disadvantages with relational database,and put forward the strategy of map tile data storage based on NoSQL.Experiment was carried out on the type of document-oriented NoSQL database products Mongo DB and SQL Server 2000,and comparative analysis on the differences between them in the tile storage and concurrent access performance.The result could confirm the efficiency of Mongo DB in the mass data storage and concurrent acc...