Abstract: This paper takes the environmental quality monitoring of vegetable greenhouse as the research object. Based on the principle of network communication technology, sensing technology and single chip microcomputer, a greenhouse environmental quality monitoring system is built to monitor the light intensity, temperature, humidity, carbon dioxide concentration and other environmental parameters in the greenhouse environment. The test and analysis data of the system show that the system can effectively collect, analyze and store the relevant environmental parameters in the greenhouse, has stable operation performance and high precision, and can be used for the monitoring and promotion of environmental quality in vegetable greenhouse.