为了达到脱除桥梁防护漆层的绿色环保要求，利用脉冲激光器的短脉冲和高峰值功率的特性，进行了激光清洗技术在桥梁脱除油漆作业时的应用研究。通过正交试验法，研究了平均功率、频率、扫描速度以及扫描次数等工艺参数对激光清洗质量的影响，以及各工艺参数的影响权重，并求得最佳工艺参数。最佳参数为平均功率50 W，频率70 kHz，扫描速度300 mm/s，扫描次数1次。根据优化后的工艺参数，加工获得了粗糙度Ra 6.6 μm，Rz 30.1 μm，且无漆层残留的良好清洗区域，验证了激光脱除油漆在桥梁防护应用中的可行性和可推广性。

In order to achieve the green environmental protection requirements of removing the bridge protective lacquer layer, the application of layer cleaning technology in the removal of paint from bridges was carried out by using the short pulse and high peak power characteristics of pulsed laser. Through the orthogonal test method, the effects of process parameters such as average power, frequency, scanning speed, number of scans and other parameters on the quality of laser cleaning, as well as the influence weight of each process parameter, and the best process parameters are obtained. The best parameters are average power 50 W, frequency 70 kHz, scan speed 300 mm/s and 1 scan. According to the optimized parameters, a good cleaning area with roughness Ra 6.6 μm and Rz 30.1 μm without paint residue is obtained, which verifies the feasibility and scalability of laser removal paint in bridge protection applications.