Abstract: In order to improve the data transmission ability and increase the battery life of the implantable continuous blood glucose monitoring system, a dual broadband antenna for the implantable continuous blood glucose monitoring device is designed. The radiation element and the floor are made of multi-layer graphene film. The radiation element bends on the surface of the radiation element through internal and external branches to extend the effective current path, thus reducing the resonant frequency of the implantable antenna and reducing the antenna size. Adding an H-shaped groove in the middle of the floor can adjust the energy coupling between the radiation unit and the floor, and increase the resonance points in the frequency band to produce multi-frequency characteristics. The influences of such parameters as the width of the radiating patch branch, the H-shaped groove floor, the coating of different biocompatible materials on the surface of the antenna, the thickness of graphene materials and the implantation depth on the antenna performance are analyzed in detail. The results show that the designed antenna has dual frequency and broadband performance, the volume is 9 mm×9 mm×0.635 mm, the ISM band bandwidth coverage is 831-1015 MHz, the WMTS band bandwidth coverage is 1.37-1.58 GHz, the radiation efficiency and gain characteristics are good, the implantable continuous blood glucose monitoring system can realize not only wireless energy transmission, but also data telemetry remote control.