［Objective/Significance］Due to the excellent chemical corrosion resistance，electrical insulation，mechanical strength，and cost advantages of polyvinyl chloride（PVC）resin，this paper analyzes its application status and bottlenecks in the coatings field，providing a theoretical basis for its research， development and engineering applications.［Analysis/Discussion/Progress］ Focusing on technological breakthroughs of PVC resin in the coatings fields of corrosion resistance，stone chip resistance， waterproofing，and multifunctional protection，this review highlights recent advancements in enhancing the overall performance of PVC coatings through copolymer modification，nanocomposites，and surface functionalization. It also analyzes the limitations of PVC in coatings applications and proposes strategies suchas eco-friendly plasticizer substitution，development of bio-based PVC raw materials，and optimization of green production processes.［Conclusion/Prospect］PVC resin coatings are driving continuous innovationto improve overall performance and expand application boundaries while actively addressing environmentalchallenges，advancing toward high-performance，multifunctional，and sustainable development. Future research should prioritize multifunctional collaborative design and large-scale production to expand itsapplications in emerging fields such as smart self-healing coatings and flexible circuit packaging，thereby achieving sustainable development of PVC materials.