This study presents a one-step ultrafast laser processing method to fabricate three-dimensional (3D) micro-/nanostructures on zinc anodes, enhancing the performance of aqueous zinc-ion batteries (AZIBs). The 3D micro-/nanostructures, with increased specific surface area, reduce nucleation overpotential and preferentially absorb zinc ions, preventing dendrite formation and corrosion. This approach results in stable zinc plating/stripping over 2500 hours, high Coulombic efficiency (99.71%), and improved capacity retention (71.8%) in full cells. The pouch cell with 3D micro-/nanostructures operates well under various bending conditions without compromising performance. The method offers a simple and effective strategy for constructing high-performance zinc metal anodes, advancing the practical application of AZIBs.This study presents a one-step ultrafast laser processing method to fabricate three-dimensional (3D) micro-/nanostructures on zinc anodes, enhancing the performance of aqueous zinc-ion batteries (AZIBs). The 3D micro-/nanostructures, with increased specific surface area, reduce nucleation overpotential and preferentially absorb zinc ions, preventing dendrite formation and corrosion. This approach results in stable zinc plating/stripping over 2500 hours, high Coulombic efficiency (99.71%), and improved capacity retention (71.8%) in full cells. The pouch cell with 3D micro-/nanostructures operates well under various bending conditions without compromising performance. The method offers a simple and effective strategy for constructing high-performance zinc metal anodes, advancing the practical application of AZIBs.