WORKING MACHINE

PROBLEM TO BE SOLVED: To provide a working machine improving travel property without wastefully consuming power and fuel by providing a correcting means controlling a power steering device so as to reduce the frequency of steering operation maintaining traveling to a target direction by an automatic steering control means. SOLUTION: This machine is provided with an automatic steering controlling means E maintaining a steering direction to a previously set target direction by the driving force of an actuator based on the measuring result of a sensor such as a posture sensor 38 discriminating the traveling direction of a traveling device body when a steering operation tool travels in a non-operating state, a discriminating means discriminating displacing tendency to the right and left at the time of traveling by the steering operation tool or at the time of traveling by the means E, and the correcting means G controlling a power steering device in order to reduce the frequency of steering operation maintaining traveling in the target direction by the means E based on the discriminating result of this means F.