The utility model relates to a slope protection mat, in particular relates to a ecological slope protection mat having a function of slope protection and compositing of brown fiber and/or coconut fiber and polymer grid or glass fiber grid. the slope protection mat is mat-shaped structure of cementation of natural fiber, external of which is connected with a layer or multi-layer of polymer grid or glass fiber grid. The connection method can be cementation or suture. the natural fiber is brown fiber or coconut fiber. The thickness and the size of internal space of the mat-shaped structure can be adjusted based on actual needs, and the structure can support growth of plant after filling with soils. Nature rubber is used for the adhesion. The root is shallow and the branch leaves are not dense during early time of vegetation restoration, while the utility model can play a strong role of soil protection under the condition of steep slope and bank slope having erosion of water flow, which can support the growth of the plant. In addition, the brown fiber and/or coconut fiber could be used as natural material and gradually decomposed as fertilizer when the vegetation has been restored after a plurality of years and the root is developed, which has low pollution, and the compound polymer grid or glass fiber grid could still play the role of strengthening anti-erosion ability of the vegetation at that time.