An impurity removal method for silicate solid waste and the use thereof. The impurity removal method comprises the following steps: (A) heating and melting silicate solid waste to be treated, so as to form a melt, and delaminating the melt during a reduction reaction process; (B) subjecting an upper-layer melt component, which is obtained by delaminating, to magnetic phase-induced crystallization to obtain a ferromagnetic phase solid; and (C) subjecting the ferromagnetic phase solid to magnetic separation, wherein the resulting residual phase is solid waste which has been subjected to impurity removal. The impurity removal method can effectively reduce the content of the main impurities in solid waste which has been subjected to impurity removal, and the solid waste which has been subjected to impurity removal can be directly used as a raw material for preparing high-value-added materials such as insulating ceramics and glass ceramics.