The invention relates to a microporous stainless steel aeration head for catalytic ozone oxidation and a manufacturing method thereof, and the microporous stainless steel aeration head is used for ozone aeration of sewage ozone oxidation, and solves the problem of low ozone utilization rate in the prior art. The microporous stainless steel aeration head is prepared from stainless steel powder, metal oxide powder, a binder and a pore-forming agent through mixing, blank making and roasting. During the roasting process, a pore forming agent volatilizes to form micropores. A metal oxide with catalytic ozone oxidation effect is evenly distributed in the aeration head. During the aeration process, ozone is fully contacted with a catalyst on the aeration head to generate strong oxidative hydroxylradicals to realize integration of aeration and catalysis, the ozone utilization rate of the ozone oxidation technology is significantly increased, and the sewage treatment efficiency is improved.