Abstract: A set of monitoring system for temperature, humidity, CO₂ concentration and light intensity in greenhouse based on remote wireless communication technology was designed. It mainly includes four modules: data acquisition module, data transmission module, main control module and data management platform. The system uses Lora technology as the medium for network design,and takes low-power STM32f103C8T6 micro-controller as the node. Through the software and design of C language, the development of mobile phone app and the development of upper computer, the data is monitored in real time. The design results show that the system has the advantages of low transmission cost, long transmission distance and low power consumption. At the same time, it can realize the requirements of remote control of agricultural greenhouse conveniently and quickly, and solve the problems of unstable data transmission and low control efficiency.