A kind of Potted-plant container structure-improved,It is the accommodating space that top side tool opening is equipped with inside one vessel of what,The accommodating space bottom is equipped with a collector pipe,Collector pipe one end system is connected to except vessel with a switching element,On the fixed what switching element of one carriage support,The what bracket is equipped with limit element,One drainage duct being made of inner catheter and outer catheter,The inner catheter system is fixed on the what bracket via limit element,It can be slid up and down with respect to the bracket,And opposite position is adjusted via an elastic cap,And inner catheter is protruded into collector pipe with one end by switching element,The other end is equipped with an aperture,And what side is equipped with a horizontal fork and is connected what outer catheter,In order to the height for enabling the water level of the accommodating space inside be maintained the identical what of the what horizontal fork.一種盆栽容器改良結構,係於一容器本體內部設有一頂側具開口之容置空間,該容置空間底部設有一集水管,集水管一端係以一轉接元件連通至容器本體之外,一支架係固定於轉接元件上,於該支架上設有限位元件,一由內導管及外導管組成之排水導管,該內導管係經由限位元件固定於該支架上,可相對該支架上下滑移,並經由一鬆緊罩帽調節相對應位置,且內導管以一端通過轉接元件伸入集水管內,另一端設有一開孔,並於旁側設有一橫叉部銜接於外導管,俾令該容置空間內部之水位得以保持於相同於該橫叉部的高度。