Air conditioner outdoor unit and air conditioner

The utility model discloses an air conditioner outdoor unit and an air conditioner, the air conditioner outdoor unit comprises a shell, an accommodating cavity is formed in the shell, and heat dissipation holes for communicating the accommodating cavity with the outside are formed in the side wall of the shell; and the sound insulation parts are arranged on the inner sides and/or the outer sides of the side walls, the sound insulation parts are right opposite to the heat dissipation holes, and ventilation openings for communicating the heat dissipation holes with the outside are formed in the sound insulation parts. According to the air conditioner outdoor unit, the heat dissipation holes are provided with the sound insulation parts, the sound insulation parts block the noise transmitted out of the heat dissipation holes so as to achieve the noise reduction purpose, the ventilation openings are formed in the sound insulation parts, and the ventilation requirement of the air conditioner outdoor unit is met.