An electromagnetic drive-by-wire electronic brake comprises calipers, a left friction plate, a right friction plate, a brake disc, a nut assembly, a driven electromagnetic disc, a return spring set, adriving electromagnetic disc, a check ring, a brake pedal sensor, a wheel speed sensor and a controller. The driven electromagnetic disc is mounted on the end cap through a bearing and is in threadedconnection with the nut assembly; a return spring set is installed between the driven electromagnetic disc and the end cap and used for resetting when braking of the driven electromagnetic disc is finished, and then the driven electromagnetic disc drives the nut assembly to reset. When the driven electromagnetic disc rotates, the push plate is driven to move leftwards through threaded transmission, and then the right friction plate is pushed to press the brake disc to generate braking. Kinetic energy of a vehicle can be fully utilized, the friction plate is driven to press the brake disc forbraking in an electromagnetic disc power take-off mode, cost can be effectively saved, installation space is reduced, a brake instruction is quickly responded, the brake distance is shortened, and brake safety is improved.