To provide an automatic chute rotating device for automatically rotating and stopping a chute in a desired snow throwing direction, when adjusting a dial of a maneuvering operation part to the desired snow throwing direction.

This device is constituted so that a rack is arranged in a chute base and a pinion meshing with this rack is rotated by a motor, and the chute can be revolvably rotated, and has a potentiometer interlocking with a revolving rotational displacement quantity of the chute, and a control device for rotating a chute revolving rotational motor by the result of a difference in an electric resistance value by comparing respective electric resistance values with a snow throwing direction indicating dial arranged in the maneuvering operation part, and is constituted so as to automatically revolve or stop the chute by rotating the chute direction indicating dial of the maneuvering operation part.