The utility model discloses an air blocking device for an intensive scattered leaf baking chamber. The air blocking device is characterized by being composed of a metal containing port, a fixator and an air blocking sponge, wherein the metal containing port is composed of a front clamping plate, a rear clamping plate and a bottom plate in an integrated manner, and the fixator is composed of a fixed clamping piece, a rotating rod, an inner nut, an outer nut and a rotating handle; the air blocking sponge is arranged on the back of the bottom plate of the metal containing port, the inner nut and the outer nut are used for installing the rotating rod on the rear clamping plate, and the inner end of the rotating rod is provided with a fixed clamping piece for compacting an air distributing plate; the outer end of the rotating rod is provided with the rotating handle. According to the utility model, the metal containing port is connected with the air distributing plate of the intensive scattered leaf baking chamber, and the air blocking device is fixed by the fixator to be prevented from falling off. The air blocking device provided by the utility model has the advantages that the air hole between the air distributing plate and a smoke installing door is effectively blocked, the non-smoke material is prevented from entering, the installation and disassembly are rapid, the fixation is firm, the manual operation is facilitated and the like, and the tobacco quality of the intensive scattered leaf baking chamber is effectively guaranteed.