The invention discloses a fluoride-free zinc alloy water-based release agent. The agent comprises the following components of, by weight, lauryl sodium sulfate, polyethylene wax, dimethyl silicone oil, hydroxyl silicone oil, isomeric alcohol-polyoxyethylene ether, a compound emulsifier, a preservative, a defoaming agent, sodium xylene sulfonate and water. The agent has the advantages that the applicability is wide, the original characteristics can still be kept when the temperature is changed hugely, the agent is not easy to oxidize, is not prone to react with most of chemical substances, hasexcellent storage stability and is easy to treat, the agent can still be very stable when the temperature of a mold is high, so that the heat shock effect and the mechanical shock effect of an aluminum alloy liquid on the surface of the mold can be effectively reduced, frictional wear of a casting on the surface of the mold can be reduced, the physical effect and the chemical effect of the aluminum alloy liquid on a mold material can be reduced, the cavity protection effect and the lubrication and mold release effect can be achieved, meanwhile, the pollution on the surface of a product causedby colloid left or residual substances is avoided, the cost is saved, the product quality is improved, and the mold release property is excellent.