Abstract:In view of the problem of large labor demand and inaccurate collection of environmental parameters of crop growth in the application process of greenhouses, a greenhouse intelligent monitoring system based on the Internet of Things(IoT) is designed to realize the precision collection of reducing labor force, crop growth environment parameters and remote control of irrigation equipment and so on. The sensor node was used to collect data of each channel in real time and to transmit it to the gateway, and to transmit it to the server through the General Packet Radio Service(GPRS) module. GPRS wireless communication and Internet network were used to achieve humanmachine communication and interaction to complete the monitoring of onsite crop growth environment. At the same time, the server was used to control the decisionmaking strategy according to the actual humidity of the soil and the agricultural knowledge expert database, and to send the irrigation instructions to the irrigation device through the gateway to realize the remote control of irrigation. The local application test of the system shows that the system is stable, robust, and can achieve the desired design goals.