The invention belongs to the energy-saving technology, in particular to an electromagnetic energy-saving brake system. A neodymium-iron-boron strong magnet is fixedly mounted on an axle; a magnetic induction loop is mounted between a tire and a rim; an inner conductive ring and an outer conductive ring are mounted at the axle end close to a wheel and on the rim; wheel spokes are connected betweenthe inner conductive ring and the outer conductive ring to form an enclosed conductor; one end of the magnetic induction loop is connected with the inner conductive ring and leads out a conducting wire to connect the positive electrode of a storage battery through a connecting terminal A, and the other end thereof is connected with the outer conductive ring and leads out another conducting wire to connect a normally open contact at the input end of a braking vane through a connecting terminal B; a normally open contact at the output end of the braking vane is connected with the negative electrode of the storage battery through a connecting terminal C; a power wire of a tail braking display red lamp is respectively connected with the connecting terminal A and the connecting terminal B. When an automobile brakes, the system can generate current with a higher instantaneous peak value; through the storage and the utilization of the current, the energy-saving effect is obvious. Furthermore, the lossless electromagnetic brake is realized, so that the system has the advantages of environmental protection and excellent safety performance.