Hydrology is an important base for water conservancy and even for the construction and development of the national economy. As one of the important basic information sources in the country, the processed hydrologic data are widely used in flood control and drought relief, water structures planning and designing, water resources management and development, water environment protecting, water scientific research and etc. For many years, the hydrologic data have been used as the reliable basis for scientific decision making and construction of national economy. Along with the development of economy and society and improvement of living standard, the requirement has been getting higher and higher in the respects of flood control and drought relief, water environment monitoring and protecting, soil and water conservation, ecotope protecting and water resources management, so that the better service should be offered in analysis, process and storing of the hydrologic data. This paper summarizes and analyzes the method of hydrologic data processing and hydrology year books developing, reviews the institution of the technical standards concerned with the hydrological data bases and achievements from construction of the hydrological data bases, and prospects the development of the concerned technology according to the requirement from hydrological information sharing and applying.