In order to understand the present situation of dam safety monitoring, this paper surve一es the safety monitoring of large and medium-sized reservoirs and analyzes the dam observation data in Jiangxi Province. We know that the awareness of reservoir safety monitoring is enhanced, daily inspection and observation of the dam seepage pressure and surface deformation can be carried out basically, besides, we mainly grasped the basic information about the project, summed up there are still many problems which consists of low reservoirs monitoring frequency, less detailed inspection record, low validity of observation data, weak ability of date integration and so on. It is the future development direction of dam safety monitoring in Jiangxi Province, which is based on the information technology, the construction of reservoir dam safety operation management system platform, the realization of data centralized storage, shared access and effective use, combination of site inspection and remote supervision