The invention discloses an ecological brick for fast restoring vegetation on a coal gangue dump slope and a manufacture method of the ecological brick, belonging to the technology of mine slope reinforcement and vegetation restoration and referring to an ecological brick capable of fast restoring vegetation and a manufacture method thereof. The ecological brick is composed of a brick body (1) the surface of which is provided with two packing chambers (2). The ecological brick is prepared by uniformly mixing cement, macadam with 28-30mm of diameter, flying ash, ardealite, cattle manure, a water-retaining agent and biogas slurry in the weight ratio of 28: 150:7:31:5:0.1:17, compressing and moulding via a mould and demoulding and airing. The ecological brick disclosed by the invention can be used for protecting and reinforcing the gangue yard and meanwhile promoting the growth of plants, realizes fast restoration of the vegetation in the mine area, has the advantages of high speed to restore the vegetation, high survival rate, no easy loss of nutrient elements, low cost and the like, and is a lawn brick suitable for fast restoration of the vegetation in the gangue yard.