A control method for an air conditioner, comprising: (S102), (S202), (S302), (S402), (S502), (S702), (S806) obtaining an abnormal weather information of a region where the air conditioner is located; (S104), (S604), (S704), (S808) determining an operating parameter of a draught fan of an outdoor unit of the air conditioner according to the abnormal weather information; and (S106), (S210), (S314), (S606), (S706), (S810) controlling the draught fan of the outdoor unit to operate according to the operating parameter, characterized in that said step of (S104), (S604), (S704), (S808) determining an operating parameter of a draught fan of an outdoor unit of the air conditioner according to the abnormal weather information further comprises: (S204), (S304), (S404), (S504) determining a weather information within a first time period; (S206) determining at least an abnormal weather and an occurrence time period of each abnormal weather according to the weather information within the first time period; and (S208), (S312), (S412), (S512) adjusting the operating parameter of the draught fan of the outdoor unit according to the abnormal weather within the occurrence time period of each abnormal weather, and in that said (S206) determining at least an abnormal weather according to the weather information within the first time period specifically comprises: (S306), (S406), (S506) determining a weather category of each of the all weathers within the first time period; (S308), (S408), (S508) determining at least an air parameter of each weather category and a parameter range corresponding to each air parameter; and (S310), (S410), (S510) determining a weather corresponding to the weather category is the abnormal weather when there is at least one air parameter among all air parameters of the weather category being outside the parameter range. (S102), (S202), (S302), (S402), (S502), (S702), (S806) obtaining an abnormal weather information of a region where the air conditioner is located; (S104), (S604), (S704), (S808) determining an operating parameter of a draught fan of an outdoor unit of the air conditioner according to the abnormal weather information; and (S106), (S210), (S314), (S606), (S706), (S810) controlling the draught fan of the outdoor unit to operate according to the operating parameter, (S204), (S304), (S404), (S504) determining a weather information within a first time period; (S206) determining at least an abnormal weather and an occurrence time period of each abnormal weather according to the weather information within the first time period; and (S208), (S312), (S412), (S512) adjusting the operating parameter of the draught fan of the outdoor unit according to the abnormal weather within the occurrence time period of each abnormal weather, and in that said (S206) determining at least an abnormal weather according to the weather information within the first time period specifically comprises: (S306), (S406), (S506) determining a weather category of each of the all weathers within the first time period; (S308), (S408), (S508) determining at least an air parameter of each weather category and a parameter range corresponding to each air parameter; and (S310), (S410), (S510) determining a weather corresponding to the weather category is the abnormal weather when there is at least one air parameter among all air parameters of the weather category being outside the parameter range. (S306), (S406), (S506) determining a weather category of each of the all weathers within the first time period; (S308), (S408), (S508) determining at least an air parameter of each weather category and a parameter range corresponding to each air parameter; and (S310), (S410), (S510) determining a weather corresponding to the weather category is the abnormal weather when there is at least one air parameter among all air parameters of the weather category being outside the parameter range. <EOS>