Increasingly large and complex modern cities, urban maintenance of the growing workload. Industrial and commercial development, making the impact of disasters and losses in return. The main feature in the city is by rain water drainage sewer drainage, as water would be too easy or blockage caused by poor drainage caused by surface water. Detected by the rain water drainage can be predicted in advance that vicinity will be flooded. In the urban areas to establish a number of fixed and mobile monitoring stations, people can be warned in advance to plan ahead and to be able to prevent the effects of disasters. In transmission, there is an existing program using cable data line has the following disadvantages: long-distance lines, including quality control difficult, vulnerable to natural disasters or break the road excavation, maintenance time, equipment can only be one-on-one, the need for large equipment and wire management, maintenance of red tape and can not be mobile and so on. The use of microwave radio relay, or wireless transmission, there is the use of licenses and equipment to build the high cost of the interface can not be quickly integrated and so on. At the same time, the entire system in the AD and DA applications, solar electricity, batteries and integration of technology, the need for a variety of investment and research and development, to system integrators for the cause of the problem is not small. Take into account the above problems, the system chosen as a commercial GPRS network transmission medium, may have the following advantages: high coverage without the use of license fees, to build low-cost platforms without erection and maintenance, billing flexibility, the use of TCP / IP data transmission platform, open high, full-featured, easy to solve the customer's headache. In this case the entire system using GPRS network to operate at the same time all were on the outdoor site, the use of solar energy to electricity. MA8-2 provides a graphical interface, without writing any programming language can be set with the AD / DA integration, by the MA8-2 to control the AD / DA of the open and customs, from time to time to read the data detector, and then through GPRS networks have been collected by each station rainfall values spread through the Internet management center, management center can control the connection status of each terminal, the information is transferred to the GIS geographic information system analysis and informed flooding their anti-Wai disaster unit in order to advance the prevention and immediate disaster relief purposes. Communications part of the entire system from the test to be completed in just one week on-line, it is for the system integrators the best solutions.