To provide a method and device for controlling the traveling of a gantry crane for realizing highly precise control with a simple constitution.

At the time of traveling a gantry 4 on a desired path by driving wheels 1 and 1 of both legs 2 and 2 of the gantry, the position of a fixed place on ground and the position of the gantry are measured by satellite radio waves, and the measured position of the gantry is corrected based on the simultaneously measured position of the fixed place, and the driving of the wheels 1 and 1 is controlled based on the corrected position of the gantry.