Abstract: Real-time monitoring of key environmental indexes in aquaponics system is of great significance to the water quality control of the whole system. A multi-parameter environmental information monitoring system based on GPRS is designed. The system can remotely monitor eleven environmental parameters of water quality information in aquaculture area and vegetable cultivation area, upload the data to the cloud server, and then realize the real-time monitoring, historical data query, remote regulation and other control through PC and mobile terminal. Combined with various environmental information, the composition of ammonia nitrogen and water quality are analyzed. The prediction model of ionic ammonia concentration is established by multiple linear regression. The test results show that the multi-parameter monitoring system runs smoothly and the success rate of data acquisition is about 99.53%. The coefficient of determination R~2 of the established multiple linear regression equation of ionic ammonia is 0.817, and the MAPE of the prediction results is 4.68%, which can effectively predict the concentration of ionic ammonia in aquaponics and provide early warning.