Abstract: A cooling fan with dual rotation directions includes a fan frame unit, a driving control unit and an impeller. The fan frame unit has an air channel having first and second air-guiding openings on two sides of the air channel. A base is disposed between the first and second air-guiding openings. A first stationary blade unit is disposed at the first air-guiding opening and a second stationary blade unit is disposed at the second air-guiding opening. The driving control unit has a stator, a driving circuit and a rotation direction control circuit, wherein the stator is disposed on the base of the fan frame unit and the driving circuit is electrically connected to the stator and the rotation direction control circuit. The impeller is rotatably coupled with the stator of the driving control unit.