As an environmentally friendly polymer material, water-based acrylic resin has shown significant application advantages in the fields of construction, coatings, and concrete in recent years due to its molecular properties of using water as a solvent Compared with traditional solvent based resins, water-based acrylic resins use water as the solvent and have a lower content of volatile organic compounds, effectively alleviating construction pollution problems and in line with the development trend of green building materials Based on the analysis of the current development status and trends of the construction industry, this article mainly summarizes the development process and synthesis technology of water-based acrylic resin, and focuses on explaining its dual path application mechanism of external coating protection and internal mixing modification in concrete engineering By forming a hydrogen bond cross-linking network and interface strengthening effect, water-based acrylic resin can significantly improve the compressive strength, impermeability grade, and shrinkage cracking resistance of concrete matrix, achieving synergistic optimization of mechanical properties and durability Finally, future research directions were discussed