Abstract: In order to improve the monitoring level of facility agricultural environment, a remote wireless monitoring system for agricultural greenhouse environment based on ESP32 module was designed. The system comprised of environmental information acquisition module, ESP32 control module, output module, and smartphone control terminal. The monitoring terminal APP was designed with blinker Internet of Things solution based on Android platform. Greenhouse environment temperature, humidity, light intensity, PM2.5 concentration, CO₂ concentration, access control and other environmental information was collected through sensors and sent to the remote monitoring mobile phone via WiFi network.The environmental information of the greenhouse was viewed and the relevant greenhouse equipment was controlled remotely using a mobile APP. The system physical prototype was manufactured and an experiment was carried out. The results showed that the lowest success rate of data transmission of the terminal was 97.3% and the average networks packet loss rate was 2.17%. The system has many advantages such as stable operation low cost,good real-time, high communication security,high reliability and easy operation.