［Objective］To prepare stabilized hydroxyacrylic emulsions with high solids and high hydroxyl content.［Methods］Using butyl acrylate（BA）and isooctyl acrylate（EHA）as soft monomers， styrene（St） and methyl methacrylate（MMA） as hard monomers，and hydroxyethyl methacrylate（HEMA）as a functional monomer，we focused on the effects of oil-to-water ratio and emulsifier dosageon the stability of the pre-emulsions through the reactive free-radical emulsion polymerization methodand further explored the effects of the proportion of hydroxyl monomer in the core-shell layer on thegelation rate of the emulsion.［Results］The emulsifier dosage was 1. 5% of the total monomer mass， and the mass ratio of anionic emulsifier to nonionic emulsifier was 2∶1. The stability of the pre-emulsion was excellent when the oil-to-water ratio was 2∶1，and no delamination was observed when it was left to stand for 24 h. When the core-to-shell mass ratio was 1∶1 and the mass ratio of hydroxyl monomer distributed in the core layer to that in the shell layer was 1∶1（a hydroxyl monomer content of approximately 32. 1% in both layers）， the polymerization gel rate could be reduced to 0. 048%.［Conclusion］A hydroxy acrylic emulsion with a hydroxyl content of 4. 2% and a solid content of 45% was prepared，and the prepared paint film had a hardness of 2H，a gloss of 85. 7 at 20°，a gloss of 92. 9 at 60°，a short drying time，and good water resistance.