The present invention relates to a water supply device for a flowerpot and, more particularly, to a water supply device for a flowerpot which smoothly and easily supplies the water of a water supply tank to the flowerpot by arranging the water supply tank, in which water is stored, in a support hold part installed at the upper side of the flowerpot. The present invention comprises: the water supply tank which comprises a cap part installed to be opened at the upper part, a certain accommodation space installed in the inner space and a discharge valve part installed on the lower side in which water stored in the inner space is selectively discharged to the outside the support hold part which is installed on the upper side of the flowerpot, supports and accommodates the certain part of the water supply tank and receives water from the water supply tank by pressurizing the discharge valve part and then opening the discharge valve part when being combined with the water supply tank and a water supply tube which is connected to a discharge tube of a depression part formed at one side of the support hold part and supplies the water stored in the support hold part to a flower pot. The discharge valve part comprises: a protrusion part which is arranged to correspond to the shape of the depression part of the support hold part connected to the lower side and includes an opening part at the center of the bottom a receptor which is combined to the inner bottom surface of the protrusion part, is installed so that the lower part is opened and includes a hollow hole a spring member stored in the receptor and a sealing member which is combined to the lower end of the spring member, is arranged so that the lower side is in contact with the bottom surface of the protrusion part and seals up the opening part by the restoring force of the spring member.COPYRIGHT KIPO 2014본 발명은 화분용 급수장치에 관한 것으로서 더욱 상세하게는 물이 저장되는 급수통을 화분의 상부측에 설치된 지지수용함에 장착하는 것으로 급수통의 물이 화분으로 원활하고 용이하게 급수되도록 하는 화분용 급수장치
