Air guide mechanism and wall-mounted indoor unit

The invention provides an air guide mechanism and a hanging indoor unit, and relates to the field of air conditioners. The air guide mechanism comprises an air guide door, a first motor and a transmission assembly, the air guide door comprises a main air guide plate and an auxiliary air guide plate, and the main air guide plate comprises a mounting end capable of being mounted in a middle frame and a free end far away from the mounting end; the auxiliary air guide plate is rotatably mounted at the free end of the main air guide plate; the first motor is mounted at the mounting end of the main air guide plate; the input end of the transmission assembly is in transmission connection with an output shaft of the first motor, and the output end of the transmission assembly is in transmission connection with the auxiliary air deflector. According to the air guide mechanism, the air guide stroke of the main air guide plate can be prolonged through the auxiliary air guide plate, and therefore the air guide effect of