Method and device for preventing oil blockage of air conditioner, air conditioner and storage medium

The invention relates to the technical field of intelligent household appliances, and discloses a method for preventing oil blockage of an air conditioner, which comprises the following steps: in the process of operating a heating and defrosting cycle of the air conditioner, acquiring the actual operating current of the air conditioner in a heating mode of the current heating and defrosting cycle; and under the condition that the heating mode of the current heating and defrosting period is switched to the defrosting mode, after the defrosting mode is finished, according to the difference value between the coil pipe temperature of the indoor unit and the preset temperature after the previous heating and defrosting period is finished and the ratio of the actual operation current to the preset current, the compressor is controlled to stop for the set time length, or the compressor is controlled to stop for the set time length. And controlling the compressor to operate at the target frequency of the heating mode.