The invention relates to an ecological bag protection method for greening slopes, which belongs to the ecological protection method for engineering construction, and is characterized in that: the ecological bag protection method for greening slopes adopts an ecological bag with a designed service life of 50 to 60 years. bag, put the mixed soil in the ecological bag, and lay and tamp the ecological bag filled with the mixed soil in the frame beam by stacking method, and then use bagged seedlings or on-demand or spray sowing on the ecological bag to plant vegetation, and then Cover the shading net or non-woven fabric on the ecological bag, and regularly spray water to maintain the vegetation, so that the vegetation can grow up in a short period of time; the steps of using this ecological bag protection method for greening slopes are: 1) , Ecological bag bagging, 2), installation of drainage pipes, 3), laying and compacting of ecological bags, 4), planting of vegetation, 5), maintenance of vegetation, soil nutrients are not easy to lose, which is conducive to the growth of vegetation and beautifies the environment , Protect the ecology.