Abstract: Due to the limitations of technical methods, the compilation of hydrological data and the compilation of yearbooks,which are two key basic tasks in the hydrological industry, are difficult to effectively connect and have become technical difficulties that currently constrain the release of hydrological data to the society. To enhance the quality and efficiency of hydrological data compilation and meet the demands of modern hydrology, Yunnan Provincial Hydrology and Water Resources Bureau has organized the development of an integrated intelligent system for the reorganization of hydrological data and the compilation of yearbooks. Using software design ideas to build an excellent system architecture, thus addressing the integration challenges between reorganization and assembly. Practical application demonstrates that the system features a user-friendly interface and intuitive operation, and the reorganization mode has changed from the traditional “daily clearing and monthly closing” to the current “daily clearing and daily closing”. This change completely solves the problems of low efficiency and poor quality of the traditional business model. Moreover, it realizes the integration and automation process of the whole assembly work, resulting in remarkable social and economic benefits. The successful implementation of this system has greatly enhanced the timeliness of hydrological data compilation, providing a scientific foundation for water resources protection and water conservancy project construction.