Air conditioner, and control method and control system thereof

The invention provides an air conditioner, and a control method and a control system thereof. The control method includes acquiring target adjusting temperature, set by a user, of the air conditioner in real time; according to a temperature range in which the target adjusting temperature is positioned, adjusting actual target adjusting temperature of the air conditioner to enable the air conditioner to adjust indoor temperature according to the actual target adjusting temperature. By the technical scheme, power consumption of the air conditioner can be lowered while the user is ensured to acquire high comfortableness, so that impact to a power grid due to overhigh power consumption of the air conditioner is avoided.