To provide an air-blowing unit of vehicular air conditioner capable of ensuring the durability of a motor even if an air blower is disposed downstream of a cooling means, and preventing the generation of a motor malfunction caused by condensation.

This air-blowing unit for vehicular air conditioner, including a cooling means 120 which is located in an air-conditioning case 110 for forming an air path and cools air, an air blower 130 which is located downstream of the cooling means 120 and generates airflows in the air-conditioning case 110, and the motor 131 for driving the rotation of the air blower 130 so that rotational speed varies, is provided with an air path 131b for sending part of the air in the air-conditioning case 110 cooled by the cooling means 120 into a housing 131a of the motor, and an opening/closing means 140 which opens/closes in response to wind pressure changed by the rotational speed of the air blower 130 on the side of the air path 131b into which cooling air flows so that the means 140 opens when the wind pressure is high.