PURPOSE: Provided is a green lung constituent structure for cultivating plants which increases the contact area between the vegetation sheet and the vegetation soil to hold the soil stably, and prevents the planted seeds from being varied in their location, thereby obtaining the proper plant germination and growth conditions. CONSTITUTION: A green lung constituent structure for cultivating plants comprises: a vegetation sheet(10) having a plurality of support protrusions(11) and a reinforcing band(12); a vegetation soil(20) deposited onto the vegetation sheet with a sand layer and a soil layer; a coverage paper(30) covering the vegetation soil to prevent it from being lost or washed away; a rectangular wall frame(40) attached to the boundary of the vegetation sheet to define the green lung and prevent the loss of the vegetation soil; a plurality of openings(51) formed at the wall frame; a mesh filtration plate(53) placed at each opening; and a drainage structure(50) with a guide tube(54) to guide the water dr
