Abstract: The present invention discloses an omnidirectional electric fan and a fan blade structure. The fan blade structure comprises: a transmission shaft, a lower connection element, an upper connection element and a plurality of fan blades. The fan blades are radiately secured in between said lower connection element and said upper connection element. Each fan blade has a root portion and a wing portion. The wing portion extends from the edge of the root portion toward both sides to form a wider portion at the border of the fan blade. The fan blade structure cooperates with a seat, a cover, a plurality of fan grills and a dynamic source to from an omnidirectional electric fan.