The topic of this project is ‘vehicle –carry FM Emitter’. It is mainly research the BH1417F circuit base on the PLL technology which ensure the frequency modulation signal stabilized and the 3D stereo coding technology which hold on the timbre of the sound barrier. By using EDA software such as the Protel 99 SE, design SCH file and PCB file. Then purchase the components and equipments. Finally, jointing these components and equipments to a production which appease to prospective request.