An air conditioner control method that includes: obtaining a current ambient temperature at start, when the air conditioner is being powered on, and selecting a current operational parameter corresponding to the current ambient temperature from a plurality of stored optimal operational parameters which are paired with historical ambient temperatures; performing a control process on the air conditioner according to the current operational parameter; characterized in that a one-to-one correspondence between the historical ambient temperatures and the optimal operational parameters is obtained by a process including: obtaining a continuous running time since this start, a number of how many times operational parameters being modified since this start and an ambient temperature since this start, each time a power-off signal is being received; obtaining an allowed modification times of operational parameters of the running duration, corresponding to the continuous running time since this start, from a predetermined one-to-one correspondence between a group of allowable modification times and a group of continuous running duration; if the number of how many times the operational parameters being modified since this start obtained is not greater than the allowed modification times, setting the last modification of the operational parameter as the optimal operational parameter matched with the ambient temperature obtained as the conditioner is being powered on; pairing the optimal operational parameter with the ambient temperature to generate and store the one-to-one correspondence between the optimal operational parameters and the historical ambient temperatures; if the number of how many times the operational parameters being modified obtained is greater than the allowed modification times, terminating the setting of the optimal operational parameters. obtaining a current ambient temperature at start, when the air conditioner is being powered on, and selecting a current operational parameter corresponding to the current ambient temperature from a plurality of stored optimal operational parameters which are paired with historical ambient temperatures; performing a control process on the air conditioner according to the current operational parameter; characterized in that a one-to-one correspondence between the historical ambient temperatures and the optimal operational parameters is obtained by a process including: obtaining a continuous running time since this start, a number of how many times operational parameters being modified since this start and an ambient temperature since this start, each time a power-off signal is being received; obtaining an allowed modification times of operational parameters of the running duration, corresponding to the continuous running time since this start, from a predetermined one-to-one correspondence between a group of allowable modification times and a group of continuous running duration; if the number of how many times the operational parameters being modified since this start obtained is not greater than the allowed modification times, setting the last modification of the operational parameter as the optimal operational parameter matched with the ambient temperature obtained as the conditioner is being powered on; pairing the optimal operational parameter with the ambient temperature to generate and store the one-to-one correspondence between the optimal operational parameters and the historical ambient temperatures; if the number of how many times the operational parameters being modified obtained is greater than the allowed modification times, terminating the setting of the optimal operational parameters. obtaining a continuous running time since this start, a number of how many times operational parameters being modified since this start and an ambient temperature since this start, each time a power-off signal is being received; obtaining an allowed modification times of operational parameters of the running duration, corresponding to the continuous running time since this start, from a predetermined one-to-one correspondence between a group of allowable modification times and a group of continuous running duration; if the number of how many times the operational parameters being modified since this start obtained is not greater than the allowed modification times, setting the last modification of the operational parameter as the optimal operational parameter matched with the ambient temperature obtained as the conditioner is being powered on; pairing the optimal operational parameter with the ambient temperature to generate and store the one-to-one correspondence between the optimal operational parameters and the historical ambient temperatures; if the number of how many times the operational parameters being modified obtained is greater than the allowed modification times, terminating the setting of the optimal operational parameters.