A combined green planting device, suitable for installation on a building, and includes a rail unit, and a plurality of planting units. The rail unit is mounted on the building, including two juxtaposed parallel track. Each planting unit includes a box, of a set at opening of the planting of the box, and two limit block. The front and rear ends of the cassette is formed with an inclined surface. Two adjacent planting unit With the limit block slip in the two track. Front and rear ends of two adjacent box With the two inclined surfaces abut against each other together.一種組合式綠化植栽裝置,適用於裝設在一建築物上,並包含一軌道單元,及複數植栽單元。該軌道單元裝設於該建築物上,包括二平行併列設置之軌道,每一植栽單元包括一圍繞界定出一容置空間的盒體、一開設於該盒體上並與該容置空間相連通之植栽口,及二分設於該盒體左右兩側且可分離地伸入該二軌道中之限位塊,該盒體之前後兩端分別形成有一傾斜面,該二傾斜面自同一方向平行地傾斜設置於該盒體前後兩端,相鄰兩植栽單元藉由其限位塊於該二軌道中滑移,而相鄰兩盒體之前端與後端藉由前後盒體之二傾斜面相互抵接在一起,以呈魚鱗式組裝態樣。5‧‧‧軌道單元52‧‧‧導接凹槽7‧‧‧蓋板單元71‧‧‧蓋板711‧‧‧頂抵壁712‧‧‧延伸壁713‧‧‧連接壁