To realize the digital and intelligent management of the agricultural production process, reduce farmland pollution and alleviate the contradiction between supply and demand of agricultural water, this paper studies and designs a farmland environment collection and remote environmental monitoring system based on the network system. The system uses sensors to collect ecological information related to crop growth, such as high temperature, humidity, solar radiation, rainfall, soil temperature, and moisture. It then transmits the data to the data processing module through wireless transmission. At last, the STM 32 F 103 RCT 6 chips are used to process and analyze the collected data and visualize the collected real-time data and analysis results. As a result, according to the demand for water and fertilizer for crop growth, agricultural irrigation can be guided to effectively improve the efficiency of farmland management, which is of great significance for promoting social and economic development.