Abstract: In recent years,China ’s agricultural mechanization has developed rapidly,and the agricultural machinery technology has also been significantly improved. With the gradual improvement of the automation level of agricultural machinery,the structure and function of agricultural machinery tend to be perfect. Automatic driving is the inevitable trend of the development of agricultural machinery automation technology. The application of automatic driving technology can further improve the efficiency of agricultural production and reduce the dependence of production process on human resources,which is conducive to the realization of intelligent agricultural machinery. Therefore,starting from the current situation of agricultural machinery technology,this paper focuses on the research and development of agricultural machinery automatic driving technology,explains the main functions of agricultural machinery automatic driving,introduces the key technologies and system characteristics of agricultural machinery automatic driving,and emphasizes the importance of the application and research and development of agricultural machinery satellite navigation technology.