Abstract: The design software of aluminum alloy template possesses characteristics of complex data relationship, large amount of data, high response speed to database operation, data distributed storage to support software collaboration, and etc. Traditionally, the software storage systems for building industry usually employ files or relational databases to store data, which always needs to take the data structure and type into consider, and can hardly dynamically increase the data of unstructured model. Additionally, the relational database is complicated in structure of cluster architecture, expensive in maintenance and complex in code processing. To better solve the above problems, we abandon the idea of relational database storage, and use the distributed non-relational database, MongoDB, to construct the data storage system of the aluminum alloy template design software.