The invention discloses a soil-fixing material-phytocoenosium combined slope protection method and relates to the technical field of slope protection. The soil-fixing material-three-dimensional network phytocoenosium combined slope protection method comprises the following steps: cultivating sod on a turf-bed in advance and transplanting the grown sod prefabricated block to a slope, wherein the process of cultivating the sod on the turf-bed comprises the steps of sequentially paving a net pad and strengthening soil on the turf-bed and sowing grass seeds on the strengthening soil; the process of transplanting the sod prefabricated block to the slope comprises the steps of stripping the grown sod together with the net pad and then fixing on the slope by soil nails or tip piles; and preferably, the grass seeds which are sowed on the strengthening soil comprises herbaceous type grass seeds and shrub type grass seeds. By the sod prefabricated transplanting mode, the construction time is significantly shortened, the water and soil loss condition of the slope can be significantly reduced and the soil-fixing material-three-dimensional network phytocoenosium combined slope protection methodis particularly suitable for high and steep slopes.