The farmland irrigation system is the lifeblood for the agriculture; due to the fact that the farmland irrigation facilities in Taiwan cover a wide range of area, the traditional Web-based system cannot appropriately meet the dynamic service requirements in the field, and their resource services could not be fully shared and reused. Therefore, in response to the distributed environmental requirements of the farmland irrigation facilities, the mobile grid will combine the grid resource framework and the mobile service mechanism: the grid resource sharing mode addresses the bottleneck in the use of the distributed information; through the use of the radio frequency identification (RFID) technology as the information trigger component of the gird nodes, the on-site patrol performance of the irrigation facilities is improved; and the combination of the global positioning system (GPS) and geographic information system (GIS) systems to build the grid application presentation interface facilitates the monitor of the irrigation facilities and patrol status. With the help of the integrated service platform of the mobile grid, the wide-area distributed nodes can be optimally controlled and used.