PROBLEM TO BE SOLVED: To perform agricultural work in an agricultural field efficiently and easily.SOLUTION: In a method for automatic farming, a base station 200 having a plurality of antennas disposed adjacently is provided in the vicinity of the agricultural field 4, and an agricultural machine 300 is provided with an information processing device and a position standardization device 411 for standardizing the current position based on the phase difference of the radio signals transmitted from each antenna. In the agricultural field 4 as an object of the agricultural work by the agricultural machine 300, a server device 100 generates a course so that the agricultural machine 300 repeatedly performs a straight-ahead drive, a change of direction by 180° at near the border of the agricultural field 4 and a restart of the straight-ahead drive from a route before changing the direction of the route with a predetermined interval in order, and transmits the generated course to the agricultural machine 300 so that the agricultural machine 300 automatically drives along the course based on the current position standardized by the position standardization device and the received course.
