The present invention provides an automatic water supply system using soil moisture measurement feedback so as to promote convenience in cultivating crops and to solve the problem of labor shortage. The automatic water supply system for a vinyl greenhouse or a glass house for farming comprises: a measurement unit measuring the current amount of moisture of the ground and providing data feedback a control unit performing a calculation algorithm for moisture supply using the data of the measurement unit and a supply unit controlled by the control unit, and configured to supply the moisture to the ground.COPYRIGHT KIPO 2015본 발명은 토지 수분 측정 피드백을 이용한 자동 수분 공급 시스템을 제공하여 농작물 재배에 있어서 편리함을 증진시키고 일손 부족의 문제를 해결하고자 한다.
