The invention discloses an all-directional fan guiding device which is used for guiding the original air formed by blades of a fan. The all-directional fan guiding device is characterized by comprising a machine frame, a flexible unit and a guiding unit, wherein the machine frame is arranged around the blades of the fan and extends in the direction of the original air, the flexible unit is located in front of the blades of the fan and is arranged on the inner side of the machine frame, the guiding unit extends from one end, close to the blades of the fan, of the flexible unit to the machine frame in the direction of the original air to form a conical guiding face, the guiding unit switches the ventilation working mode and the guiding working mode through a power module, and the flexible unit adjusts the air guiding range by controlling the taper of the conical guiding face so that the original air can be dispersed all around along the conical guiding face rather than be clustered in the axial direction, and all-directional blowing is achieved.