Indoor unit of air conditioner

The utility model relates to the technical field of air conditioners, in particular to an air conditioner indoor unit, and aims to solve the problems that an air conditioner provided with a purification module in the prior art is high in price and very troublesome to disassemble and replace. In order to achieve the purpose, the air conditioner indoor unit is provided with a purification unit, the purification unit comprises a purification assembly arranged on the outer side of a shell and a driving transmission mechanism arranged on the shell, and the purification assembly is arranged to be capable of conducting purification treatment on air flowing through the purification assembly. The driving transmission mechanism is arranged to be capable of driving the purification assembly to move to the outer side of the air outlet from the storage position. According to the air purifier, the purification assembly is arranged outside the shell and is driven to move between the storage position and the outer side of th