With the rapid advancement of science and technology, micro-nano technology, as anemerging research field, is bringing revolutionary changes to many disciplines. In particular,femtosecond laser technology, with its ultra-high precision, extremely short pulse duration,and powerful nonlinear effects, has shown tremendous potential in the fabrication of micronano structures. Femtosecond lasers can not only achieve processing at extremely small scales but also precisely control the morphology and properties of the structures without damaging the substrate, offering unprecedented application prospects in fields such as optics, electronics, energy, and biomedicine.