The invention provides a reservoir multi-level management mobile application system based on cloud service. The reservoir multi-level management mobile application system is characterized by comprising a data acquisition layer, a data conversion layer, a cloud service platform layer and a mobile application layer, wherein the data acquisition layer is deployed on a reservoir site, different instruments or devices are installed according to needs to obtain reservoir dam real-time monitoring reservoir information, and the data types of the reservoir information comprise engineering characteristics, water conditions, rain conditions, dam safety monitoring, flood forecasting and dispatching, gate monitoring, video monitoring, personnel materials and operation management information; and storing the reservoir operation original data acquired by the data acquisition layer in an original database. The invention aims to provide a reservoir multi-level management mobile application system basedon cloud service, so as to improve the timeliness and convenience of reservoir dynamic supervision of each level of reservoir management department, break through the limitation of reservoir management in professional technology and time space, and fundamentally solve the problems of reservoir multi-level real-time dynamic supervision and the like.