PURPOSE: A bad odor removal method of bad odor generating pollutants including sulfuric acid treatment steps is provided to improve environmentally-friendly characteristic by removing bad odor from the bad odor generating pollutants. CONSTITUTION: A bad odor removal method of bad odor generating pollutants includes a process in which 0.5-5 weight% of sulfuric acid, 5-50 weight% of a solidifying agent, and 0.005-1 weight% of potassium monopersulfate are sprayed to bad odor generating pollutants on the basis of the total weight of the bad odor generating pollutants. The bad odor generating pollutants are sewage sludge, food waste, livestock excrements, or industrial wastewater. The solidifying agent is neutral or alkali. The solidifying agent is lime, diatomite, olivine, cement, concrete sludge, by-plaster, electricity furnace oxidized slag, blast furnace slag, powdered slag, alum, alunite, fly ash, magnesium oxide, or briquette ash. [Reference numerals] (AA,HH) Deodorization rate(%); (BB) Ammonia; (CC) Trimethylamine; (DD) Acetaldehyde; (EE) Methyl mercaptan; (FF) Acetic acid; (GG) Hydrogen sulfide본 발명은 효과적이며 용이하게 다양한 악취 유발 오염물질의 악취를 제거하기 위하여, 황산을 처리하는 단계를 포함하는 악취 제거 방법을 제공한다.