The invention discloses a coal briquette air stove which is small in noise and high in heat efficiency and comprises a shell, a furnace pipe and a chimney, wherein an air guide sleeve is arranged between the furnace pipe and the shell and is of a cavity structure, and the two ends of the air guide sleeve are provided with openings; an air inlet and the air port arranged on the shell are connectedinto a whole, a fan is embedded in the air port, and the front wall and rear wall of the air guide sleeve are curved surfaces; one end of an elbow is communicated with and welded on the furnace pipe,and the other end of the elbow penetrates through a shell roof; and the chimney is deviated to one side of the air inlet, an air outlet is arranged on the shell. The coal briquette air stove providedby the invention is of a structure that the air guide sleeve is arranged between on the furnace pipe and the shell, and when cold air enters into the air inlet, the cold air flows along with the inner walls of the curved surfaces of the air guide sleeve, thus the windage is small, the noise is not strong, the cold air enters from the air port and the air inlet to flow one circle and finally flowsout from a radiator. The endothermic process of the cold air in the stove is long, thus the heat efficiency is higher.