Air duct system of sleeping compartment and air conditioning system of sleeping multiple unit

The invention discloses an air duct system of a sleeping compartment and an air conditioning system of a sleeping multiple unit, and relates to the railway vehicle technique. The air duct system of the sleeping compartment comprises a transverse wall air duct and lower berth air ducts, wherein the transverse wall air duct is arranged inside a transverse wall of the sleeping compartment and extends along the height direction of a train body; the upper end of the transverse wall air duct is used for communicating with a branch air duct; a lower berth activity space is formed between lower berths in the sleeping compartment and berths arranged above the lower berths; the lower berth air ducts are arranged on or inside compartment walls around the lower berth activity space to supply air to the lower berths; and one end of each lower berth air duct is connected with the transverse wall air duct. The air duct system of the sleeping compartment and the air conditioning system of the sleeping multiple unit provided