Abstract: The present invention relates to an electric fan moving automatically, and provides driving means which comprises a driving ball (10) for moving the fan body (100); at least four driving rollers (11) disposed around the driving ball (10), and a motor (12) and a coil (14) for operating the driving rollers (11) selectively, so that the fan could be moved to the desired position conveniently with only a selective control of the power transmission between the driving ball (10) and driving rollers (11) by simple operation of a remote controller. Therefore, the convenience in using the fan is increased and thereby the entire value of the fan is also increased.