Aiming at the problems of small coverage area

high network complexity and low flexibility of the traditional agricultural greenhouse remote monitoring program

a LoRa remote greenhouse monitoring system based on browses/server（B/S） architecture is proposed.The system can remotely and flexibly monitor the environmental parameters such as temperature

humidity and light intensity of the surrounding crops in the greenhouse

and realize automatic ventilation

automatic fill light

and alarm function in the greenhouse.Users can use the computer Web or mobile Web to monitor environmental information in the greenhouse and control ventilation and fill light.The system adopts the LoRa module for self-organizing network to achieve environmental monitoring within a large range.The experimental results show that compared with the traditional Zig Bee technology and C/S architecture monitoring mode

the monitoring scope of this system is broader and more flexible

which meets the needs of agricultural greenhouse monitoring and is more suitable for the application of agricultural greenhouse monitoring.