The invention belongs to the field of concrete and in particular discloses a water-permeable concrete cementing material and a preparation method thereof. A formula of the cementing material comprisesthe following components in parts by weight: 40 to 60 parts of ordinary portland cement, 10 to 25 parts of activated silicon dioxide powder, 5 to 8 parts of epoxy resin, 3 to 5 parts of sodium gluconate, 4 to 6 parts of stearate, 1 to 3 parts of a flocculating agent and 0.5 to 1.5 parts of a polycarboxylic acid water reducer. The formula of the cementing material, provided by the invention, is scientific and reasonable and all the components are complementary to each other, so that the wear resistance of water-permeable concrete can be improved, the continuous porosity is reduced, and the 3dcompression strength, 28d compression strength and water-permeable coefficient are remarkably improved.