What plant cultivation water system is closed in this creation. The plant plants water system for setting one clearance space environment of what, the clearance space environment is equipped at least one and a space is partitioned at least one compartment section for surrounding space, the compartment section is equipped with a door portion able to turn on or off, the clearance space environment is additionally provided with the plant that at least one sets the what compartment section side and plants, and it includes a hydraulic pipeline which, which plants water system,. The hydraulic pipeline sets the what clearance space environment for a lateral what at least compartment section and for being connected with a water source, which has at least one for corresponding what at least one water outlet for planting cultivation.本創作關於一種植栽供水系統。該植栽供水系統供設於一間隔空間環境,該間隔空間環境設有至少一將一空間區隔成至少一圍繞空間之隔間部,該隔間部設有一可啟閉之門部,該間隔空間環境另設有至少一設於該隔間部一側之植栽,該植栽供水系統包括一輸水管路。該輸水管路供橫向於該至少一隔間部而設於該間隔空間環境並供與一水源相連通,該輸水管路具有至少一供對應於該至少一植栽之出水端。