激光辅助涂层技术的目的是保护暴露的工业产品或易受化学损伤的部件和结构。概述了想要在材料表面的高性能和昂贵部件中权衡制造成本，主体部件可由更便宜的材料制成，通过涂覆技术以达到成本设计的最优化。重点综述了近年来激光辅助技术的研究进展。使用激光作为热源制造机械零件的一组革命性工艺，包括采用基于激光的工艺在所选区域上产生材料沉积以提供保护层和增强基材的耐腐蚀和耐磨性、传热和机械性能。迄今为止，已经引入和研究了多种激光辅助工艺，包括增材制造(AM)、激光表面合金化(LSA)、激光表面熔覆(LSC)、激光辅助等离子体喷涂(LPS)、激光化学气相沉积(LCVD)及其他多种激光辅助涂覆技术。重点归纳了涂覆过程中每种工艺的优势及限制其应用的缺点。对激光辅助涂层方法进行了分类，归纳了激光辅助涂覆方法，并对其进行了比较研究，用以提供更清晰的图片和选择合适的涂层技术，从而根据实际应用获得最理想的涂层设计方案。最后展望了通过发展更先进的技术和材料，可能会获得更高质量的保护性能。

The purpose of laser-assisted coating technology is to protect exposed manufacturing products or parts and structures that are vulnerable to chemical damage. To find a trade-off between good performance and high expense of materials, the main parts can be made of cheap materials to optimize the cost design through coating. In this paper, emphasis is placed on the introduction of the research progress of laser-assisted technology in recent years, and a group of revolutionary processes using laser as heat source to manufacture mechanical parts are also introduced. This includes the use of laser-based processes to produce material deposits on selected areas to provide a protective layer and enhance the corrosion and wear resistance, heat transfer and mechanical properties of the substrate. Up to now, many laser-assisted technologies have been introduced and studied, including AM additive manufacturing, laser surface alloying (LSA), laser surface cladding (LSC), laser-assisted plasma spraying (LPS), laser chemical vapor deposition (LCVD) and many other laser-assisted coating technologies. This paper highlights the advantages of each process, as well as the disadvantages that always limit their application. In this paper, the methods of laser-assisted coating are classified and summarized, and a comparative study of these techniques is proposed in order to provide a clearer picture and select the appropriate coating technology, so as to obtain the optimal coating design scheme according to the practical application. Finally, a vision is given that better protection performance could be obtained through the development of more advanced technologies and materials in the future.