Abstract: Agricultural safety is a key issue in agricultural production, and the electrical automation system of agricultural machinery can reduce the frequency of failure of agricultural machinery and equipment, increase the service life of agricultural machinery, and is very important in agricultural production. The remote monitoring system of agricultural machinery based on bus technology and wireless communication technology is an intelligent management system, which is composed of monitoring center, a communication network and an agricultural machinery system terminal. The monitoring equipment is connected with the monitoring center, and the central server obtains the sensor information of agricultural machinery through mobile communication technology, and stores it in the server database, and realizes the remote monitoring of agricultural machinery through the monitoring equipment. It improves the safety of agricultural production and the work efficiency of agricultural machinery.