The invention relates to a rotation speed control method for an air conditioner compressor, which comprises the following steps: setting the rotation speed value of an air conditioner compressor into N rotation speed shifts from low to high, and setting a corresponding rotation speed adjusting coefficient interval and a rotation speed instruction value; acquiring indoor temperature and outdoor machine temperature in real time; according to a cooling temperature value set for an air conditioner, the indoor temperature, an outdoor machine standard temperature setup value and the outdoor machine temperature, calculating a rotation speed adjustment coefficient; according to the calculated rotation speed adjustment coefficient, confirming the rotation speed adjustment coefficient interval, confirming a corresponding rotation speed instruction value; adjusting a current rotation speed value of the air conditioner compressor to be equal to the calculated rotation speed instruction value. By adopting the rotation speed control method for the air conditioner compressor, the service life of the air conditioner compressor can be prolonged, and the cooling effect of the air conditioner compressor can be improved.