The utility model relates to an improvement of a hydroponics vegetable cultivation device, which mainly comprises a plurality of tanks, a plurality of cultivation racks arranged on the tanks with suction accessories, and a cover arranged on the upper part of the tanks.Among them, the trough system is arranged with protruding points at appropriate intervals from inside to outside, and the cultivation frames are connected with each other, which are provided with a plurality of large and small brake rods, the cover system is provided with ribs, and the ribs are provided with a groove corresponding to the protruding point of the trough body.In order to plant hydroponics vegetables, a culture medium is placed in the tank body, and vegetable seeds are placed in the suction accessories of each cultivation frame. The culture medium is absorbed by the suction accessories to form the cultivation and planting of hydroponics vegetables. The brake rod of the cultivation frame is pulled according to the planting date, and the brake rod is pulled apart by the top holding of the brake rod at the protruding point of the tank body, so as to open the distance between the cultivation frames, so as to facilitate the growth of hydroponics vegetables.一種水耕蔬菜栽培裝置之改良，主要係包含複數之槽體及置於該等槽體設有吸附件之複數個栽培架，以及置於槽體上方之罩體。其中，該槽體係由內而外以適當間隔排列之突點，該等栽培架係相互連接，其設有複數相互牽制之大、小制動桿，該罩體係設有肋條，於肋條設有對應於槽體突點之剖槽。俾於槽體置入培養液，並於各栽培架之吸附件放置蔬菜種子，藉由吸附件吸附培養液以構成水耕蔬菜之培植栽種，且依栽種的日期將栽培架之制動桿拉動，藉由槽體突點對制動桿的頂持，使制動桿拉開，進而使各栽培架間拉開距離，以利於水耕蔬菜之成長，
