By the end of 2015，after the completion of the national hydrological monitoring system for small and medium-sized rivers，in order to effectively cope with the pressure brought by the multi-person and less-task tasks，most of the hydrology in all areas have carried out hydrological surveys.Taking Jiujiang City as an example，this paper expounds that the development of hydrological patrol and the establishment of county hydrological management institutions is a solution to the problem of multi-tasks and heavy tasks faced by hydrology after the completion of hydrological monitoring systems for small and medium-sized rivers.It is also proposed to adjust the functions of hydrological monitoring stations，speed up the hydrological monitoring capability of the county，improve the top-level design of hydrological monitoring and management reform，and continuously improve the capacity and level of grassroots hydrological services.