A kind of universe wet alternate water-supply structure,It is mainly that an ostiolate accommodating space is equipped with inside one primary tank of what,The opening of the what accommodating space is equipped with an at least hollow out notch,One Water supply switch valve system is arranged in the accommodating space of the what primary tank,Water supply switch valve one end system passes through the water supplying pipe outside primary tank connection one,The Water supply switch valve other end system connects a floating ball,And the Water supply switch valve system is changed by the high and low position of the floating ball and generates the open and close supplied water and act,One Non-return air valve system runs through on setting what primary tank,And the limitation that the air inside accommodating space unidirectionally circulates outward is provided,With formed a what low water level or it is anhydrous when can be automatically replenished the mechanism at water source.一種乾溼交替供水結構，主要係於一主容器內部設有一具開口的容置空間，於該容置空間的開口上設有至少一鏤空缺口，一供水開關係設置於該主容器的容置空間內，該供水開關一端係穿過主容器連結一外部的供水管，該供水開關另一端係連接一浮球，且該供水開關係受該浮球的高低位置變化而產生供水的開啟與關閉動作，一單向氣閥係貫穿設置於該主容器上，並提供容置空間內部的空氣單向向外流通的限制，以形成一於低水位或無水時可自動補充水源的機構。
