Control method of outdoor fan and air conditioner

The embodiment of the invention discloses a control method of an outdoor fan and an air conditioner, relates to the technical field of air conditioners and solves the problems that the refrigerating capacity of the air conditioner is poor and the stability is poor due to the fact that the rotating speed of the outdoor fan is not adjusted according to the change of a load or due to the fact that the rotating speed of the outdoor fan is not adjusted timely. The specific scheme is as follows: when a low-temperature refrigeration working condition is determined, the temperature of indoor and outdoor coils in the current period is obtained, the target rotating speed of the outdoor fan is determined according to a first difference value between the temperature of the outdoor coil and the temperature of the outdoor coil in a previous period, and the outdoor fan is controlled to operate at a target rotating speed in the current period. The embodiment of the invention is used for the refrigeration process of the air c