Abstract: In this study, natural flake graphite is exfoliated by mechanical shearing combined with ultrasonic to obtain pristine graphene (PG).Then, Ag nanoparticles (NPs) /graphene composites are synthesized by in-situ growing Ag NPs on PG with AgNO₃ as the precursor, polyvinylpyrrolidone (PVP) as the dispersant, and glucose as the reducing agent in the obtained PG solution.Afterward, Ag NPs/graphene is used as the conductive filler, and the waterborne acrylic resin is used as the binder to prepare waterborne environmentally friendly conductive ink, by adding the appropriate amount of defoamer, leveling agent and thickener etc.When the printed pattern is sintered at 150 ℃for 20 min, its resistivity is about 1.43×10^-6 Ω·m.Finally, the HFSS software is used to design the impedance matching of the radio frequency identification (RFID) tag antenna, then the antenna size parameters are obtained.The designed RFID tag antenna is printed by screen printing with the obtained water-based ink, and the chip is installed to make the tag semi-finished product Inlay.According to the testing data, the power on tag forward can reach -19.9 dBm, and the optimal reading range is 12 m, which can meet the needs of various application scenarios.