The invention relates to an autonomous field robot, which is characterized by comprising a stander body, a travel guiding device, walking devices, a work object detecting device, an actuating device, a control system and a power supply system. The front end and the back end of the stander body are provided with a front cabin and a back cabin respectively, the control system is arranged in the front cabin, the power supply system is arranged in the back cabin, the travel guiding device is arranged at the front end of the stander body, the walking devices are arranged the front end and the back end below the stander body respectively, and the middle part of the stander body is provided with the work object detecting device and the actuating device; and the travel guiding device, the walking devices, the work object detecting device, the actuating device and the control system are connected through signal wires and connected to the power supply system with the control system. The autonomous field robot has the advantages that the autonomous field robot can run autonomously in a field, has good universality, has multiple functions with one machine, improves use efficiency, and reduces use cost.