The present invention relates to a method for constructing a retaining wall for preventing the collapse and erosion due to the loss of the earth's sand by being built on a sloped surface of a boundary wall or a retaining wall when constructing a general residential building, an industrial building or an apartment complex, The present invention relates to an assembling-type retaining wall block for vegetation which can be easily stacked and constructed so as to be stacked and constructed in a succeeding gradual or upright-type erection structure. In the assembling-type retaining wall block for vegetation, a retaining wall is formed so as to extend in an upright or downward-Retaining wall blocks; A filling ball which is formed as a vertical through hole so as to facilitate drainage, and which can contain a filling soil; A retaining part formed on the retaining wall block for preventing the other retaining wall block, which is vertically stacked on the upper end, from being pushed forward by the earth pressure; A groove formed in a predetermined side surface of the retaining wall block and having a groove formed on an inner side surface of the groove portion and a protrusion formed on an inner surface of the groove portion and formed on an outer surface of the protrusion, A coupling protrusion; A connection part installed on an upper part of a rear part of the retaining wall block and formed in a shape of a lower light shield; And a natural marble part formed on the front part of the retaining wall block so as to protrude in a rock-like shape unevenly.본 발명은 일반 주거용 건축물이나 산업용 건축물 및 아파트 단지를 조성할 때 경계벽이나 옹벽의 경사진 면에 축조되어 토사의 유실로 인한 붕괴 및 침식을 방지하는 옹벽의 축조에 이용되면서 축대의 전면에 상측으로 연속해서 이어지는 구배형 또는 직립형 조립식으로 쌓아 시공할 수 있는 시공이 편리한 식생용 조립식 옹벽블록에 관한 것으로, 식생용 조립식 옹벽블록에 있어서, 상하좌우 방향으로 연속해서 이어지는 직립형 또는 구배형으로 이어지도록 옹벽을 축조할 수 있게 하는 옹벽블록; 배수가 용이하도록 상하 관통공으로 형성되며, 채움토를 담을 수 있는 채움공; 상기 옹벽블록의 상부에 형성되고, 상단에 상하로 적층되는 타측 옹벽블록이 토사 압력에 의해 앞쪽으로 밀리는 것을 방지하기 위한 걸림부; 상기 옹벽블록의 소정 측면에 형성되고, 일측면에는 홈부가 형성되되 그 홈