Freezing protection method and device for air conditioner, air conditioner and storage medium

The invention relates to the technical field of intelligent household appliances, and discloses an air conditioner freezing protection method which comprises the steps that under the condition that an air conditioner is in refrigeration operation, the temperature of an inner coil pipe is obtained; under the condition that the temperature of the inner coil pipe is higher than the freezing protection temperature, whether preset freezing protection conditions are met or not is judged according to the indoor environment temperature and the operation frequency of a compressor; under the condition that the freezing protection condition is met, freezing protection operation is executed. A judgment link for starting the freezing protection function is added under the condition that the temperature of the inner coil pipe is normal, so that the influence of the illusion that the temperature of the inner coil pipe is normal due to blockage of an air inlet filter screen or blockage in an indoor heat exchanger pipeline on