The invention belongs to the field of soft ferrite, and discloses nickel-zinc soft ferrite for wireless charging and a preparation method and application thereof. The ferrite comprises a main component and a doping component, wherein the main component comprises Fe2O3, NiO, ZnO and CuO; the doping component at least comprises one of Nd2O3, Pr6O11, Gd2O3, Dy2O3, Tb2O3, Ho2O3 and Sm2O3; in terms ofthe weight of the main component, the Fe2O3 content of the main component is 64-67wt%, the NiO content thereof is 4-10wt%, the ZnO content thereof is 18-24wt% and the CuO content thereof is 3-9wt%; interms of the weight of the main component, the content of each doping component is 0.02-0.2wt%, and the total addition amount is smaller than or equal to 0.5wt%. Through improvement on the doping component of the nickel-zinc soft ferrite, a thin ferrite magnetic sheet product is sintered densely when T is equal to 0.05-0.2mm, the sintering temperature width is increased, the shrinkage rate is slow during sintering temperature rise, and the appearance is smooth; meanwhile, the power loss per unit volume of the magnetic sheet (power consumption) can be also effectively reduced, the working temperature rise of a wireless charging component can be reduced, and the transmission efficiency can be improved.