The invention provides an electromagnetic driving mechanism. The electromagnetic driving mechanism comprises a static piece (10/210), a moving piece (20/220), a positive electrode (31/231), a negativeelectrode (32/232), a magnetic cage (40/240) and an electron emission gun (50/250), wherein the positive electrode (31/231) and the negative electrode (32/232) are arranged on the static piece (31/231) and are arranged opposite to each in a moving direction (A) of the moving piece (20/220), the magnetic cage (40/240) is arranged on the moving piece (20/220) and is arranged between the positive electrode (31/231) and the negative electrode (32/232), the magnetic cage (40/240) comprises a first annular coil and a second annular coil which are opposite in current direction, electrons emitted from the electron emission gun (50/250) enter the magnetic cage (40/240) and move in an electron constraint container formed from the magnetic cage (40/240), an electric field force of an electric fieldformed from the positive electrode (31/231) and the negative electrode (32/232) is applied to the electrons and is transferred to the magnetic cage (40/240), so that the moving piece (20/220) is driven by the magnetic cage (40/240) to move relative to the static piece (10/210).