［Objective］ To address the issue of low paint transfer efficiency in the automobile painting process.［Methods］ Using a mass production painting line as a platform，a high transfer efficiency（high TE） spraying system with external clearcoat spraying was employed for trial sprayverification. By optimizing spraying trajectories and adjusting process parameters，the improvement effects on spraying quality，energy consumption，and paint unit consumption were evaluated.［Results］ The high transfer efficiency spraying technology significantly improved paint transfer efficiency.Compared with conventional electrostatic spraying technology，paint unit consumption was reduced by 15%，spray booth air velocity was decreased by 30%，and the transfer efficiency was 90. 2%. Thespraying quality met the requirements for mass production.［Conclusion］This technology represents an effective path for cost reduction，efficiency improvement，and green manufacturing in automobile painting，and holds great potential for large-scale promotion.