Based on SMS (Short Messaging Service) mechanism of mobile communication network, a remote control irrigation system of SMS is designed and developed. The system uses the text message word segmentation, frequency calculation and subject extraction algorithm to process the received remote control information to generate the binary command required by the terminal device to implement the irrigation control or the status query. The system will provide the information for the SMS mechanism to be feedback information Conversion and processing into PDU (Protocol Data Unit) string, through the mobile communication network through the wireless data transmission module to the customer service, to achieve the status of the implementation of the system or the results of the system query