The present invention relates to a sterilization system in a negative-pressure isolation ward, the configuration of which is a sterilization system installed in a negative-pressure isolation ward that maintains a relatively low pressure state while the interior is sealed and isolated from the external environment, wherein the sterilization system comprises: At the same time, each space is provided by dividing the inside of the hospital room into n equal parts, and an exhaust duct for discharging indoor air to the outside and an air supply duct for introducing external air into the room are respectively installed in one or more of the spaces. An exhaust filter unit with an air outlet is installed toward the possible entrance door, and a HEPA filter that removes virus bacteria in the air introduced through the air outlet and the air that has passed through the HEPA filter is ultraviolet ray inside the exhaust filter unit. A plurality of UV sterilization lamps are installed to sterilize by emitting them； At the rear end of the exhaust filter unit, a circulating air outlet is formed so that air is discharged to the hospital room, and a sterilization unit formed by installing a blower on one side of the circulating air outlet is installed in communication with the exhaust filter unit via a connection duct. In the sterilization unit, a plurality of photocatalyst coating plates are installed in a horizontal direction, and a UV sterilization lamp that emits ultraviolet rays is installed between the plurality of photocatalyst coating plates, and the sterilization system is forced to force air. Inflow and It is connected to a thermo-hygrostat and piping to maintain the desired temperature and humidity.본 발명은 음압 격리 병실 내 살균시스템에 관한 것으로, 그 구성은 내부가 밀폐되어 외부환경으로부터 격리되며 상대적 저기압 상태를 유지하는 음압 격리 병실 내 설치되는 살균시스템에 있어서, 상기 살균시스템은, 평면에서 볼 때 상기 병실 내부를 n 등분하여 각각의 공간들을 마련하되, 상기 각 공간 중에서 어느 하나 이상의 공간에는 실내공기를 외부로 배출시키는 배기덕트와 외부공기를 실내로 유입시키는 급기덕트가 각각 설치됨과 동시에, 입출입이 가능한 출입도어를 향하여 공기배출구가 형성된 배기필터유닛
