PURPOSE: A method of reducing contaminants in indoor air is provided to completely remove volatile organic compounds such as formaldehyde which causes sick house syndrome, sick car syndrome, or atopic dermatitis, thereby preventing emission of harmful substances.CONSTITUTION: A method of reducing contaminants in indoor air comprises a step of spraying harmful chemical substance remover on indoor furniture and construction materials a step of emitting ozone in indoor air and a step of collecting dusts existing in indoor air. The said harmful chemical substance remover is a material to decompose formaldehyde and volatile organic compounds. When the harmful chemical substance remover is sprayed, the remover is infiltrated into the furniture and construction materials so that formaldehyde and volatile organic compounds embedded in the furniture and construction materials can be continuously removed.COPYRIGHT KIPO 2013[Reference numerals] (S1) Step of increasing a room temperature to 38-40°C by operating an indoor heating device (S2) Step of spraying harmful chemical substance remover on indoor furniture and construction materials (S3) Step of spreading harmful chemical substance shielding material on the indoor furniture and construction materials (S4) Step of emitting ozone in indoor air (S5) Step of collecting dusts existing in indoor air by a dust collector본 발명에 의한 실내공기 오염물질 저감방법은, 유해화학물질제거제를 실내의 가구 및 건축자재에 분사하는 단계 실내공기 중에 오존을 방출하는 단계 실내 공기 중의 미세먼지를 집진하는 단계를 포함하여, 실내 공기 중의 아토피 및 새집증후군 유발물질을 저감하는 것을 특징으로 한다.
