Loess slope protection system

The loess slope protection system comprises a drainage mechanism, a water storage mechanism and an irrigation mechanism, the drainage mechanism is optimally arranged to comprise an outer drainage mechanism and an inner drainage mechanism, and the outer drainage mechanism is arranged along the surface of a slope and used for draining, guiding and collecting runoff formed by rainfall; the inner drainage mechanism is arranged in the side slope and used for draining water accumulated in the side slope due to rainfall based on an electro-osmosis drainage method. The problems of slope erosion, landslide, collapse and mud flow of the loess slope caused by rainfall runoff are relieved, the problems of soil body softening, cohesive force reduction and easy collapsing deformation caused by increase of the water content in the loess slope body are solved, and the long-term stability of the loess slope is effectively improved. In addition, the water storage mechanism is further provided with a main water source and a sta