Navigation is a key technology for agriculture machinery when it works automatically, and it becomes a hotspot in research field of agricultural machinery at present. In this paper, literatures are reviewed according to the main ways and key technologies of navigation of agricultural machinery. First of all, navigation technologies based on global positioning system and machine vision were reviewed in detail. Then other ways such as electromagnetic navigation, mechanical navigation, laser navigation, ultrasonic navigation, geomagnetic navigation were reviewed briefly. Sensing of environment, control methods and mapping of environment as the key technologies of the navigation were introduced respectively. Finally, the future development of navigation technologies for agricultural machinery was analyzed.