The invention belongs to the field of concrete release agents, and specifically discloses an environment-friendly styrene butadiene polymer permeable concrete release agent and a preparation method thereof. The release agent is calculated in parts by weight and is made from the following raw materials: 40-60 parts of water-soluble styrene butadiene polymer, 20-30 parts of calcium formate, 8-15 parts of 100-200# solvent oil, white 20-30 parts of oil, 25-40 parts of mineral oil, 25-50 parts of emulsified silicone oil, 40-100 parts of waste motor oil, 200-500 parts of glycerin, 1-5 parts of petroleum ether, 10 parts of dodecyl diethanolamide -35 parts, 1-5 parts of lauryl stearate, 1-2 parts of butyl stearate, 80-150 parts of deionized water, 0.5-2 parts of film-forming aid, 3-10 parts of rust inhibitor, Activated powder 30-60 parts. The mold release agent of the invention can prolong the service life of the mold, is convenient for cleaning, has good surface finish, good dispersibility, good anti-corrosion and anti-rust functions, is easy to demould and clean, the coating is resistant to water erosion, and can increase the amount of permeable concrete. The strength, the greater reduces the cost and improves the performance.