The invention relates to a leather making technology and discloses an air permeable leather making technology. The air permeable leather making technology comprises 1, orderly polishing a leather blank through a polishing machine, 2, spraying a dye to the surface of the leather blank, 3, drying the dyed leather blank, 4, pasting a polyester fiber layer to the back surface of the leather blank, 5, moving the leather blank to a position below a punching roller (1) through a transmission band (5) and making air permeable holes on the leather blank with the polyester fiber layer through the punching roller (1). Through cooperation of the punching roller and the leather blank, the leather blank surface forms air permeable holes so that leather air permeability is effectively improved. In dyeing and drying, multitime temperature change is conducive to improvement of leather strength and color saturation so that the leather product has wear resistance and crease resistance.