The present application relates to the technical field of air conditioners, and disclosed is a removable and washable air conditioner indoor unit. One end of a locking member is hinged onto an air duct casing, and the other end of the locking member is movably connected to a base, so that when the locking member is connected to the base, same may be used to restrict the removal of an air duct component through a first opening so as to ensure the assembling stability between the air duct component and the base. At the same time, since the locking member is movably connected to the base, when the locking member is disconnected from the base, the air duct component and the base may be unlocked so as to disassemble the air duct component from the base so as to facilitate cleaning.