The slope protection materials commonly used in gardens include wicker, turf, block stone, prefabricated frame and so on. 1. Willow riprap slope protection is formed by crossing wicker on new blocks. In wickerwork space, 0.2-0.4m thick block stones are thrown, and a gravel layer with a thickness of 10-20cm is set under the block stones, which is convenient for drainage of rivers and reduces soil erosion. The plane size of willow lattice is 0.3mx0.3m or 1mx 1m 2. The thickness of vegetation layer of slope protection varies with the type of bamboo house used. The vegetation layer thickness of turf slope protection is 15-45cm, flower bed slope protection is 25-60cm, and shrub slope protection is 45- 180cm. Trees are generally not used as slope protection plants in vegetation layer. Because of the high center of gravity of trees, sometimes the slope will collapse because of the fall of trees. 3. Dietotherapy for slope protection with block stones requires high density, low water absorption and strong frost resistance, such as sandstone, granite, limestone and other rocks. Rectangular dietotherapy with length-width ratio of 1:2 and block diameter of 18-25cm is the best. 4. Precast frames are made of concrete, plastic, metal mesh, iron and other materials, and the size and design shape of each frame unit can be changed due to many factors. Frames are generally prefabricated and assembled into various simple graphics during slope construction. After being fixed with anchors and short piles, fill the frame with fertile soil, which is higher than the frame and slightly compacted to prevent the running water from going deep into the frame, washing away the bottom of the frame and hanging the frame when it rains. Sketch shapes and specifications of precast concrete frames.