With the rapid advancement of aerospace technology

difficult-to-machine materials such as high-strength alloys

ceramics

and composites have gained widespread application. But traditional machining methods struggle to meet the demands for high-quality processing. Waterjet-guided laser processing technology

with its advantages of high precision and low damage

addresses the shortcomings of tool wear and large heat-affected zones inherent in conventional mechanical machining and laser machining

demonstrating significant application potential. Therefore

this paper systematically reviews the working mechanisms and practical applications of waterjet-guided laser processing technology for difficult-to-machine materials in the aerospace field. First

it elaborates on the fundamental principles of waterjet-guided laser processing

the multi-field coupling material removal mechanism

and comprehensively introduces the core components of the waterjetguided processing system. Second

it delves into its multidimensional working mechanisms from three dimensions: water jet characteristics

optical properties

and water-optical coupling characteristics. Subsequently

it comprehensively summarizes research progress in cutting and hole-making processes for “difficult-to-machine materials” using waterjetguided laser technology. Finally

it explores typical application scenarios of this technology in precision machining

based on current research status

and outlines future development trends for waterjet-guided laser precision machining technology.