The utility model discloses an energy -concerving and environment -protective disperse burning heat accumulation formula combustion gun, including outer barrel, interior barrel and burning torch. Interior barrel is fixed in the one end of outer barrel, and in the one end of interior barrel stretched into outer barrel, outer barrel formed first gas transmission way with interior barrel, and interior barrel is equipped with second gas transmission way, is equipped with the first pipe of entering on the outer barrel, and the switch -on is said in first intake pipe and first gas transmission, is equipped with the second pipe of entering on the interior barrel, and the switch -on is said in second intake pipe and second gas transmission, and gas outlet that first gas transmission was said and the gas outlet that the second gas transmission was said are joind in combustion gun's nozzle department. The barrel was close to in the burning torch was fixed in the one end of second intake pipe, the some fire end of burning torch stretches into in the second gas transmission way. The utility model discloses an energy -concerving and environment -protective disperse burning heat accumulation formula combustion gun, furnace pressure was little when it added the hot charge, easy control, the heating is even, energy -concerving and environment -protective in addition.