To prevent the generation of a weaving bar caused by a shift of a cloth fell during its leveling.

This leveling device performs the leveling action as follows: When a leveling start commanding switch 47 is operated on, a delivering motor 11 and a winding motor 22 rotate in positive direction slowly to remove the cloth fell W1 of a woven fabric W away from a swinging range of a reed 16 to the woven fabric side. Then, leveling actions of the excitation and demagnetization of electromagnets 381-411 of dobby mechanisms 38-41 for the leveling and slow and positive rotation by 2 rotations of a loom-driving motor Mo to make the rotating position of the loom as θo, are carried out. When a leveling release commanding switch 48 is operated on, a loom-driving motor rotates slowly in reverse direction and the loom rotating position returns to the θo. Then, leveling release actions of the excitation and demagnetization of electromagnets 381-411 for the leveling and slow and positive rotation by 2 rotations of a loom-driving motor Mo to make the loom rotating position as θo, are carried out.