Abstract: High efficiency is necessary to data organization structure for large amount of data storage and application of Personal Credit System. Studies the data organization structure of Personal Credit System based on modeling technology of data ware house and designs the data warehouse architecture. The architecture includes three kinds of database:Base Database, CRM Database, and Analysis Data Mart. Based on HOLAP modeling technology of data ware house the system meeds the demand for data storage in detail and multidimensional analysis querying.