This mini review focuses on the advancements in femtosecond laser processing for flexible electronic devices. The femtosecond laser, with its narrow pulse width and high peak power, offers high-precision material modification and processing. The review highlights the physical mechanisms and characteristics of femtosecond laser fabrication, emphasizing its cold processing capabilities, material adaptability, and high-resolution processing. It discusses various methods to improve processing efficiency and resolution, including direct femtosecond laser writing, spatial-temporal pulse shaping, and laser sintering. The review also covers the application of femtosecond laser in fabricating flexible energy storage devices, triboelectric nanogenerators, flexible sensors, and detectors. Finally, it discusses the challenges and future prospects in the field of femtosecond laser processing for flexible electronics. The review aims to facilitate the precision manufacturing of flexible electronics using femtosecond lasers.This mini review focuses on the advancements in femtosecond laser processing for flexible electronic devices. The femtosecond laser, with its narrow pulse width and high peak power, offers high-precision material modification and processing. The review highlights the physical mechanisms and characteristics of femtosecond laser fabrication, emphasizing its cold processing capabilities, material adaptability, and high-resolution processing. It discusses various methods to improve processing efficiency and resolution, including direct femtosecond laser writing, spatial-temporal pulse shaping, and laser sintering. The review also covers the application of femtosecond laser in fabricating flexible energy storage devices, triboelectric nanogenerators, flexible sensors, and detectors. Finally, it discusses the challenges and future prospects in the field of femtosecond laser processing for flexible electronics. The review aims to facilitate the precision manufacturing of flexible electronics using femtosecond lasers.