The invention discloses a high strength ceramic tile and a preparation method thereof and relates to the technical field of ceramic tiles. The high strength ceramic tile is prepared from 100 to 120 parts of pregelatinized starch, 90 to 100 parts of modified clay, 30 to 40 parts of waste glass powder, 30 to 40 parts of industrial solid wastes, 20 to 30 parts of straw-coated granules, 2 to 10 portions of dolomite, 2 to 10 parts of volcanic rock, 2 to 8 parts of graphene, 2 to 8 parts of nanometer titanium dioxide, 2 to 6 parts of a foaming agent and 100 to 150 parts of water. The preparation method of the high strength ceramic tile comprises (1), preparation of straw-coated particles and (2), material mixing and molding. The high strength ceramic tile has the advantages of shock and cracking resistance, high strength, breakage difficulty, small thermal conductivity coefficient, good mechanical performance and long service life.