The invention belongs to the technical field of power supply and power generation, in particular to a self-circulating magnetic suspension flywheel energy storage generator. The invention aims at thesmall energy storage, low speed and high noise, easy to heat, low transmission benefit existing in the existing flywheel energy storage power generation device, , The invention provides a self-circulating magnetic levitation flywheel energy storage generator which can eliminate or reduce the noise, heat and other phenomena when the flywheel power generation machine is running, greatly increase theflywheel speed and reduce the friction force, improve the working efficiency of the power generation machine, and realize the self-circulating magnetic levitation flywheel energy storage generator which can continuously generate electric energy. The invention comprises a housing, a driving mechanism, a magnetic levitation structure, an iron core, an output coil, a self-circulating coil and a rotor, wherein the driving mechanism comprises a driving mechanism stator, a driving mechanism rotor and a flywheel, and the flywheel is suspended by the magnetic levitation structure. The invention has the characteristics of large energy storage, high rotational speed, low noise, not easy to heat, high transmission efficiency and continuous generation of electric energy.