The invention discloses an air conditioner control method. The method comprises the steps that 1, the outdoor environment temperature T1 and the temperature T2 of an electrically controlled radiator are detected, the dew-point temperature Td of the outdoor environment is obtained by means of the outdoor environment temperature T1 and relative humidity RH, and comparison is conducted on the dew-point temperature Td and the temperature T2; 2, when T2-Td<delta T1, under the refrigeration working condition, the opening of a first throttling element is increased, and the opening of a second throttling element is decreased; under the heating condition, the opening of the first throttling element is decreased, and the opening of the second throttling element is increased; when delta T2>=T2-Td>=delta T1, the opening of the first throttling element and the opening of the second throttling element are not changed; when T2-Td>delta T2, under the refrigeration working condition, the opening of the first throttling element is decreased, and the opening of the second throttling element is increased; under the heating condition, the opening of the first throttling element is increased, and the opening of the second throttling element is decreased. By means of the air conditioner control method, it can be guaranteed that electronic controlled components are used safely, and the service life of an air conditioner is prolonged.