The magnetic isolation sheet is a magnetic sheet-like auxiliary material for the coils at both ends of the wireless charger. It is a soft magnetic material sintered at a constant temperature and has high magnetic permeability and low magnetic loss factor. It uses the electron scattering caused by the thermal movement of the functional component lattice electric field and the interaction between electrons to absorb electromagnetic wave energy and convert it into thermal energy. This achieves the purpose of attenuating electromagnetic waves.