The invention discloses a silicon hybridization acrylate-cement composite grouting material and a preparation method thereof, and belongs to the technical field of new materials of municipal and construction projects. Inorganic binder cement and inorganic nanoparticles are introduced into an acrylate pre-polymer, a polymerization reaction is generated under the effects of a crosslinking agent, aninitiator and a promoter, and a mixture is polymerized to form a mesh complex hybridization gel body insoluble in water through the processes of chain initiation, chain growth and chain termination; siloxane modified acrylate can eliminate the difference between an organic material and an inorganic material (cement), improve the interaction between interfaces, and improve compatibility between polyacrylate resin and the cement; and the composite grouting material is less in environment pollution, does not generate dust pollution, belongs to an environment-friendly material, and can simultaneously solve the problems that an acrylate grouting material is low in strength, and a cement grouting material is poor in dry shrinkage resistance, durability and dispersion resistance.