The utility model discloses a counter-rotating fan. The impeller comprises a first-stage impeller and a second-stage impeller which are opposite in rotating direction. wherein the first-stage impellerand the second-stage impeller are driven by two mutually independent driving mechanisms, the first-stage impeller comprises a plurality of first blades, the second-stage impeller comprises a plurality of second blades, the pressure surfaces of the first blades are opposite to the suction surfaces of the second blades, and the bending directions of the first blades and the second blades are opposite. The utility model discloses a counter-rotating fan. Due to the fact that the rotating directions of the two stages of impellers are opposite, the bending directions of blades are opposite, the rotating directions of airflow generated by the two stages of impellers are opposite, the phenomena of despinning and cruising can occur when the two kinds of airflow meet in a rotating mode, and under the condition that the rotating speed ratio is reasonable, the fan can output a wind field with high wind pressure and strong force and can also output a large-flow and long-distance wind field. In addition, due to the fact that driving mechanisms of the secondary impellers are independent of one another, the counter-rotating fan can obtain an adjustable and controllable wind field, and the use satisfaction degree of users is improved.