The invention relates to a self-leveling mechanism for an engineering machine, and discloses a self-leveling mechanism used for controlling the inclination movement of equipment (15) during pivoting of a main arm (3). The equipment (15) is arranged on an equipment connector (5) of the main arm (3) arranged on the engineering machine in a lifting manner, and a wheel type loader (1) is preferably selected. The self-leveling mechanism is arranged to at least partially compensate for any inclination movement of the equipment (15).