Abstract: Function of automated guided vehicle is material transportation in industry.As the area of single greenhouse increases，the distance between operation areas increases，in order to realize connection between operation areas and efficiently complete tasks of transportation，picking，spraying，etc.，an automatic navigation tractor used in the greenhouse was developed.The equipment mainly included drive assembly，steering assembly，AGV control assembly，manual control assembly，road cleaning device，lead-acid battery，chassis and shell.The greenhouse tractor developed not only could realize automatic navigation，but also could realize manual control in areas with huge area，complex road conditions or uncertain lines.Its application in greenhouse production was flexible and convenient，which greatly improved equipment level of modern agriculture.