The invention discloses an air conditioner control method. The air conditioner control method comprises the following steps that a refrigerating instruction is answered, and the set temperature of theair conditioner and the environment temperature value and the environment relative humidity value of the using environment of the air conditioner are obtained; the set relative humidity range corresponding to the set temperature is obtained; according to the environment temperature value, the set temperature, the environment relative humidity value and the set relative humidity range, the air conditioner is controlled to enter a cooling mode or a dehumidification mode or a cooling and dehumidification alternated mode so that the environment temperature value can be smaller than or equal to the set temperature, and the environment relative humidity value is in the set relative humidity range. The invention further discloses an air conditioner and a computer readable storage medium. In thetechnical scheme, the air conditioner adjusts the environment relative humidity value while adjusting the environment temperature value, and the thermal comfort experience of the human body can be better improved.