PURPOSE: A compression and volume-reducing apparatus for infectious waste is provided to reliably prevent the release of infectious materials to the outside when compressing and reducing the volume of infectious waste such as medical waste.CONSTITUTION: A compression and volume-reducing apparatus for infectious waste comprises a container(2) to store infectious waste a cover member(3) to seal an open part of the container a compressing plate(4) configured to be lowered and raised by a raising/lowering mechanism for loading upwardly or downwardly the infectious waste in the container a disinfectant spray mechanism(6) disposed in the container to spray liquid disinfectant in the container a suction mechanism(7) to make the container maintained at a negative pressure by sucking gas from the container a gas sterilization mechanism(8) to sterilize the gas sucked by the suction mechanism a cooling mechanism(9) to cool down the gas sterilized by the gas sterilization mechanism and an adsorption and deodorization mechanism(10) to absorb and deodorize the odor contained in the gas which is cooled down by the cooling mechanism.COPYRIGHT KIPO 2013[Reference numerals] (AA) Flow of gas본 발명은 의료폐기물 등의 감염성 폐기물을 압축감용화할 때에 감염성 물질이 외부로 방출되는 것을 확실하게 방지할 수 있도록 한 감염성 폐기물의 압축감용화 장치를 제공하기 위한 것이다.본 발명은 용기(2) 내에 투입한 감염성 폐기물(W)을 승강기구(5)에 의해 승강하도록 한 압축반(4)에 의해 압축감용화하는 압축감용화 장치(1)에 있어서, 감염성 폐기물(W)에서 방출되는 감염성 물질을 살균하기 위한 살균기구(8, 14)로서, 살균선조사 살균기구, 방전·플라즈마조사 살균기구, 연X선 살균기구, 열살균기구 및 광촉매 살균기구 중 어느 하나의 기구 또는 2 이상의 기구를 조합한 것을 구비한다.