Indoor unit and air conditioner

The indoor unit comprises a machine shell, an air duct component, a first air guiding piece, a second air guiding piece and an air guiding shutter, the air duct component is arranged in the machine shell and forms an air duct, and the air outlet side of the air duct component is provided with a first air duct wall and a second air duct wall which are opposite to each other; the first air guide part is close to the first air duct wall, the first air guide part and the first air duct wall are arranged in a spaced mode, the first air guide part can rotate relative to the first air duct wall, the second air guide part is rotatably connected to the second air duct wall, the first air guide part and the second air guide part form an air outlet communicated with the air duct, and the air guide shutter is rotatably arranged at the air outlet; the first air guide piece and the second air guide piece are used for adjusting the air supply angle in the width direction of the air outlet, and the air guide shutters are used for adjusting the air supply angle in the length direction of the air outlet. According to the technical scheme, multi-angle air supply is achieved.