Sterilization control method of multi-split air conditioner and the multi-split air conditioner

The invention belongs to the technical field of air conditioners, aims to solve the problem that a user feels uncomfortable when chemical products such as a disinfectant are used for sterilizing a room at present, and provides a sterilization control method of a multi-split air conditioner and the multi-split air conditioner. The multi-split air conditioner comprises a plurality of indoor units. The sterilization control method comprises the steps of acquiring a sterilization instruction of the target indoor unit; acquiring a current operation mode of the multi-split air conditioner; and enabling the multi-split air conditioner to execute a corresponding sterilization mode according to the sterilization instruction of the target indoor unit and the current operation mode of the multi-splitair conditioner so as to enable the target indoor unit to sterilize the indoor space. In the heating operation of the multi-split air conditioner, hot air is discharged from the target indoor unit, indoor high-temperature di