The embodiment of the invention discloses an air supply
system which comprises a centralized air supply
machine arranged on the outer side of a room and an indoor unit air supply
pipe. One end of the indoor unit air supply
pipe is communicated with an air outlet of the centralized air supply
machine, and the other end of the indoor unit air supply
pipe is connected with indoor units so that
airflow flowing out of the indoor unit air supply pipe can pass heat exchangers of the indoor units. According to the air supply
system, the centralized air supply
machine is arranged outside the room, so that a draught fan is not needed for the indoor units; and the centralized air supply machine supplies air to the indoor units so that the heat exchange speed of the heat exchangers of the indoor units can be increased. Due to the fact that a draught fan
system is not needed for the indoor units, the overall
noise of the indoor units can be lowered, the internal space of the indoor units is reduced,
miniaturization of a unit is achieved, and no limit of the draught fan
system structure exists; and the indoor unit structures can be diverse, the indoor unit structures can be bent at any angle, and therefore more excellent visual enjoyment can be provided for users. The invention further discloses an air conditioner.