Indoor unit of air conditioner

The utility model discloses an air conditioner indoor unit. The air conditioner indoor unit comprises a machine shell; the air duct component is installed in the machine shell, and an air outlet is formed in the bottom of the air duct component; the air guide driving motor is installed in the machine shell and located on one side of the air duct component; the air guide mechanism comprises a connecting rod assembly and an air guide piece, the air guide piece transversely extends to be arranged at the air outlet, the first end of the connecting rod assembly is connected to the power output end of the air guide driving motor, and a positioning hole is formed in the second end of the connecting rod assembly; a positioning shaft and an elastic buckle are arranged on the plate face of one side of the end, close to the connecting rod assembly, of the air guiding piece at intervals, the positioning shaft is inserted into the positioning hole in a matched mode, the elastic buckle is clamped to the periphery of the se