The utility model relates to a light catalytic particle pollutant processing apparatus, including the casing, the bottom of casing is equipped with the air inlet, and the top of casing is equipped with the gas outlet, and the inside of casing is equipped with the catalytic oxidation room, and the upper wall of catalytic oxidation room is equipped with a plurality of ultraviolet tube, and the lower wall of catalytic oxidation room is equipped with a plurality of photocatalyst carrier, and photocatalyst carrier and ultraviolet tube staggered arrangement form " S " type gas passage between photocatalyst carrier and the ultraviolet tube, air inlet department be equipped with electric precipitation heater, stainless steel multi -stage filtration net in proper order from going, gas outlet department is equipped with the exhaust fan. Light catalytic particle pollutant processing apparatus, be equipped with electric precipitation heater, stainless steel multi -stage filtration net, can prevent effectively that dust and large particulate pollutant from blockking up catalyst micropore, improvement catalysis efficiency, being equipped with the gas passage of " S " type, can effectively increasing the catalytic oxidation time, it is more thorough to make particulate pollution handle.