Monitoring system is the integration of sensing technology, data communication technology and microcomputer technology. It achieve the aim of hydrological data collection in time and transmission and visual analysis which can supply gist to prevent mine be flood .The system take DELPHI as a software development platform and choose Microsoft SQL Server as the database system. Adopt the structure of C/S as development model, integrate the GSM wireless communications and lineate industry control network, transmit the hydrological data like water level and hydraulic pressure and temperature and flux by RTU collected in real-time.The monitor computer send or receive data data frames by MSCOMM which is widget of serial communication contro.In this way, it communication with ground GSM module and subterranean station, automatically transferred the data to the hydrological information system database.In the system we used the FTP and Socket technology transfer data from the data-base of safety monitoring system. In this way,we enlarge the application mode of system.Visualized monitoring system pack up the data into data-base which collecte and transmit roboticized. The system have the ability of fleetly query and browse by the deal mode, have fleetly query and look through.Interface can display the state of monitoring points, and the real-time data can make ultra-alarm, the list shows that dynamic curve of display; according to historical data can also list and curves that can also generate a measurement of the aquifer The water level at the contrast curve and contour map, as well as statistical analysis of various statements. Through the hydrological data visualization and data information to visual images and graphics shown, making all kinds of information and analysis of the results more transparent. The Hydrological-multi-meterage of visualized Monitoring system done unattended data collection.By the analysis and visualization of combined treatment means, can grasp the change of groundwater.System in the practical application of Shandong, Henan, Hebei, Anhui and other places coal mine unit, which has achieved good economic and social benefits, the guidance of coal mine production safety and flood control has played an important role.