To prevent the flow-away of a vegetation base material, and to realize the vegetation by providing a plurality of holding members between longitudinal frames of slope frames installed on a slope face, fixing earth retaining members, and filling the vegetation base materials between the earth retaining members and the slope face.

A tubular member is installed on upper and lower transverse frames of slope frames 1, holding members 5 are provided in the longitudinal direction, the concrete is shotcreted, and tubular member is pierced through and embedded in a longitudinal frame 11 and a transverse frame to form a through hole. The holding members 5 formed of plated steel with the rush-proof paint, etc., are inserted in the through hole, and the holding members 5 are provided between right and left longitudinal frames 11, 11 of the slope frame 1. Earth retaining materials 6 consisting of fine mesh wire network, non-woven fabrics, woven fabrics, etc., are fixed to the holding members 5, and a heat insulation material 7 is mounted on the earth retaining materials 6. A vegetation base is formed by filling a vegetation base material 8 from the earth generated at site in the earth retaining members 6. The earth retaining members 6 are fixed to stably anchor the vegetation base on the slope 10, and flow- away due to rain is prevented.