高熵合金作为颠覆传统单主元合金设计范式的多主元新型材料，依托高熵、迟滞扩散、晶格畸变及鸡尾酒四大核心效应，展现出优异的力学性能、高温稳定性、耐蚀性与抗辐照性，在极端服役环境下具备广阔应用前景。 然而传统制备加工工艺易引发成分偏析、晶粒粗大、脆性相析出等缺陷，严重制约其本征性能发挥与工程化应用。 激光技术凭借高能量密度、超快热循环速率、窄热影响区及非接触精准加工等优势，成为实现高熵合金高效 制备 、精 细 组织调控与高性能优化的核心技术路径。 本文系统梳理高熵合金的结构特性与性能优势，剖析传统制备技术的固有瓶颈；重点阐述激光增材制造、激光表面改性、激光焊接 3 类核心激光技术在高熵合金领域的研究进展，揭示不同激光工艺对高熵合金微观组织演化、缺陷形成与抑制及力学性能的调控规律；深入探讨激光-高熵合金相互作用过程中的关键基础科学问题与技术挑战；最后从理论、工艺、材料体系及工程应用等维度，展望了激光技术在高熵 合 金 领域的未来发展方向。

As a new type of multi-principal element material that subverts the design paradigm of traditional single-principal element alloys, high-entropy alloys exhibit excellent mechanical properties, high-temperature stability, corrosion resistance and radiation resistance by virtue of four core effects: high entropy, sluggish diffusion, lattice distortion and cocktail effect, thus boasting broad application prospects in the field of extreme service environments. However, traditional preparation and processing technologies are prone to induce a series of problems, such as composition segregation, coarse grains and brittle phase precipitation, which severely restrict the use of their intrinsic properties and engineering applications. Owing to its unique advantages, including high energy density, ultrafast thermal cycle rate, narrow heat-affected zone and noncontact precision processing, laser technology has become a core technical approach for realizing the efficient preparation, fine microstructure regulation and high-performance optimization of high-entropy alloys. The structural characteristics and performance advantages of high entropy alloys are systematically discussed, and the inherent bottlenecks of traditional preparation technologies are analysed. The research progress of three core laser technologies, namely, laser additive manufacturing, laser surface modification and laser welding, within the field of high-entropy alloys is emphasized, and the regulatory effects of different laser processes on the microstructural evolution, defect formation and inhibition, and mechanical properties of high-entropy alloys are revealed. Key basic scientific issues and technical challenges arising from the interaction between lasers and high-entropy alloys are further discussed. The future development trends of laser technologies applied to high-entropy alloys are ultimately predicted from the perspectives of theoretical research, manufacturing processes, material systems and industrial engineering applications.