Drain pipe assembly of indoor unit of air conditioner and air conditioner

The utility model relates to the technical field of air conditioners, and discloses a drainage pipe assembly of an indoor unit of an air conditioner and the air conditioner. The drain pipe assembly comprises a drain pipe defining a channel used for draining condensate water generated by a heat exchanger of the indoor unit; the baffle is arranged in the channel and can move relative to the drainage pipe so as to open or close the drainage pipe; and the operating part is matched with the baffle, and the operating part is operated to drive the baffle to move relative to the drainage pipe so as to open or close the drainage pipe. The operating piece can drive the baffle to move relative to the drainage pipe to open or close the drainage pipe. In this way, a user can control opening or closing of the drainage pipe by controlling the operation piece, so that the user can autonomously select the drainage time, the problem that the condensate water breeds bacteria or generates peculiar smell due to the fact that the