The present invention relates to an unmanned automatic disinfection system for a greenhouse and a livestock house. More specifically, according to the present invention, anyone can easily install a disinfection system in a greenhouse or a livestock house, and a pipe fixing means, a chemical scattering means, a chemical agitating means, and a discharging and filtering means which constitute an unmanned disinfection device can be decomposed and assembled, so an advantage in installation is ensured. A disinfection system provided to spray chemicals into a greenhouse or a livestock house according to the present invention comprises: a fluid supplying pipe (20) connected with a frame (10) installed in the greenhouse or the livestock house by means of a pipe fixing means (100) as a medium； a chemical scattering means (200) installed in the fluid supplying pipe (20), and capable of scattering chemicals flowing in the fluid supplying pipe (20)； a water tank (300) for accommodating chemicals supplied to the fluid supplying pipe (20)； a chemical flowing pipe unit (500) installed at the bottom of the front surface of the water tank (300) to discharge the chemicals； a discharging and filtering means (600) installed on the inner bottom surface of the water tank (300) while being connected with the chemical flowing pipe unit, and capable of filtering foreign materials included in chemicals discharged through the chemical flowing pipe unit； and a disinfection high pressure pump (800) capable of supplying chemicals discharged through the chemical flowing pipe unit (500) to the fluid supplying pipe (20).본 발명은 온실 및 축사용 무인자동방제시스템에 관한 것으로, 보다 상세하게는 온실이나 축사의 내부에 방제시스템을 누구나 손쉽게 설치할 수 있도록 하고, 무인방제장치를 이루는 배관고정수단, 약액비산수단, 약액교반수단, 배출여과수단 등의 기술적 구성이 분해 및 조립이 가능한 구조로 이루어지도록 함으로써 설치상의 이점을 제공하는 온실 및 축사용 무인자동방제시스템에 관한 것이다. 본 발명은 온실 또는 축사의 내부에 약액을 살포하도록 이루어진 방제시스템에 있어서, 상기 온실 또는 축사의 내부에 설치되는 골격대(10)에 배관고정수단(100)를 매개로 연결되는 유체공급배관(20)； 상기 유체공급배관(20)에 설치되어 상기 유체공급배관(20)을 유동하는 약액을 비산시킬 수 있도록 하는 약액비산수단
