Dew removal method of air conditioner and air conditioner

The invention provides a dew removing method of an air conditioner and the air conditioner. The air conditioner comprises a first air guide plate set and second air guide plate sets which are arranged at an air outlet, the second air guide plate sets are located on the two sides of the first air guide plate set, the second air guide plate sets and the first air guide plate set jointly adjust the left air outlet angle and the right air outlet angle of the air outlet, and the dew removing method comprises the steps that the air conditioner is started; after waiting for a first target duration, the condensation condition of the first air deflector set is obtained; if the first air deflector set does not have condensation, obtaining the condensation condition of a second air deflector set after waiting for a second target duration; and if condensation exists in the second air guide plate set, the second air guide plate set is controlled to swing in a reciprocating mode. The method has the advantages that the work