The invention relates to an air brick with a high blowing through rate and a manufacturing method thereof. The air brick is composed of the following components: coarse corundum with granularity greater than 0.5mm and smaller than or equal to 1 mm and mass fraction of 35-50%; fine corundum with granularity greater than 0 and smaller than or equal to 0.5 mm and mass fraction of 25-40%; alumina fine powder with granularity greater than 0.020 mm and smaller than or equal to 0.044 mm and mass fraction of 8-15%; alumina micro powder with granularity greater than 0 and smaller than or equal to 0.020 mm and mass fraction of 5-10%. The manufacturing method comprises the procedures of mixed milling, material kneading and press forming, and further comprises the procedures of roasting, high temperature sintering, flow detecting, steel shell packaging and the like. According to the air brick provided by the invention, the particle size distribution and the machine pressing pressure are controlled, and uniformly distributed and mutually communicated micropores are formed in a brick body after high temperature sintering so as to achieve the permeability of an air brick body material.