Low reflectivity and superhydrophilicity are ideal conditions for improving the performance of electronic devices, graphene as a new superconducting material has been widely used in the field of electronic information. At present, the realization of low reflection and superhydrophilicity mostly depends on the microstructure design and processing of graphite surface by femtosecond laser, and the high processing cost limits its further development. Therefore, we propose a low-cost, low-reflectivity graphite surface microstructure processing method based on picosecond laser. The effects of laser processing parameters on the micro-morphology, reflectivity and hydrophilicity of graphite surface are systematically studied through experiments. The results show that the reflectance of graphite samples with microstructured surfaces is significantly reduced after laser processing. In addition, the contact angle of graphite samples is effectively regulated, and the generation of graphene oxide on the surface of graphite samples after processing is verified. Using ultraviolet picosecond laser prepare microstructures on the graphite surface has the advantages of high efficiency, controllability and low cost, and provides technical support for its potential application in the preparation of surface functional components.