To accurately and rapidly carry out pitching control at desired longitudinal tilting angle when a machine body is subjected to manual pitching operation by installing a posture-changing operation means 100 for carrying out changing operation of longitudinal tilting angle to a grounding part of a traveling apparatus and a control means 200 for controlling operation of the posture- changing operation means 100, based on order from posture-changing order means 40a and 40b.

This working machine is equipped with a display means 41 for displaying longitudinal tilting angle of a machine body and the control means 200 is constituted so as to display longitudinal tilting angle of a machine body detected by inclination detecting means 24 on the displaying means 41.