With the rapid development of hydrological modernization construction and the rapid development of Jiangxi hydrological station network，in order to solve the contradiction between the shortage of personnel and the number of stations，it is necessary to promote the pace of hydrological monitoring reform and vigorously promote the hydrological survey.Based on the existing hydrological data，it is necessary to analyze according to the current industry standard"hydrological survey specification" to provide support for the optimization of the test scheme.In this paper，Hushan hydrological station is taken as an example to explore the single value treatment of the complex relationship between water level and discharge．