Magnetic force vibrating device and vibrating projection screen

The application provides a magnetic force vibrating device and vibrating projection screen. A magnetic force vibrating device includes: a magnetic field production subassembly for producing the magnetic field of variation with time, and do not produce subassembly direct contact with magnetic field and cause the vibration output subassembly of self vibration under the effect in magnetic field, should the outside portion's output vibration of vibration output subassembly. Another kind of magnetic force vibrating device includes: including a motor, an end cap, a controller, and a cover plate. It carries out rotatory rotating head to receive motor drive, fix the one or more metal block on the rotating head with spaced mode each other, this one or more metal block is rotatory along with the rotating head, and contain the vibration output subassembly of permanent magnet, vibration output subassembly not with motor, rotating head and one or more metal block direct contact to the permanent magnet causes the vibration of vibration output subassembly self under the effect in magnetic field, and to outside output vibration.