PURPOSE: A disinfecting and deodorizing composition, and a disinfectant for feed are provided to maintain disinfecting and deodorizing functions of the composition for a long period of time.CONSTITUTION: A disinfecting and deodorizing composition contains 0.005-20 parts by weight of chlorine dioxide, 0.07-0.08 parts by weight of oxygen, and 20-200 parts by weight of chlorite based on 10,000 parts by weight of the composition. The pH of the disinfecting and deodorizing composition is 1-5.COPYRIGHT KIPO 2012소독 및 탈취용 조성물이 제공된다. 본 발명에 따른 소독 및 탈취용 조성물은 전체 조성물 10000 중량부를 기준으로, 이산화 염소 0.005~20 중량부, 산소 0.07~0.08 중량부, 및 아염소산염 20~200 중량부를 포함할 수 있다.