With the development of internet Web2.0 technology, the traditional relational database is widely used in information management system. However, it is not effective, when we need to query a wide range of massive data, especially with multi-table join queries. Now, a kind of new technology emerged — NoSQL, which is non-relational database management system with format loose data storage, not support the join operation, the effective query capability etc advantages. This paper attempts to use NoSQL database to replace the relational database, applied to traditional information management systems, compare the two database technologies, give the key code of NoSQL implementation, and finally list the performance comparison of two schemes.