The utility model relates to an ecological mat made of palm fiber, which comprises a plurality of three-dimensional space frames made of palm fiber, wherein one layer or a plurality of layers of polymer grids or glass fiber grids are arranged in the three-dimensional space frames which are mutually cemented to form a mat-shaped structure. The utility model has the strong function of earth protection under the conditions of steep slopes, bank slopes with the function of current scour, etc., and thus the utility model supports plant growth; on the other hand, a plurality of years later, when vegetation is retrieved and the root system gets strong, the palm fiber gradually used as natural material rots to become fertilizer with little environment pollution; at this time, the polymer grids or the glass fiber grids arranged in the palm mat still reinforce the anti-scour ability of the vegetation.