The present disclosure discloses a strong magnetic power generation vehicle mounted power device including a strong magnetic power generation equipment, an installation seat installing on a vehicle body, a support plate fixedly connected to the strong magnetic power generation equipment; a socket providing on the support plate; a support rod inserted into the socket; a bottom plate providing on the installation seat; a spring fixedly connected between the bottom plate and the support plate; the socket is elliptical, and the support rod is also elliptical; a top end of the support rod extends out the socket; a top end of the support rod is fixedly connected with a threaded part; the threaded part is connected with a nut; the nut is provided with a rim; the rim abuts against the support plate. The present disclosure can reduce vibration generated by the strong magnetic power generation equipment.