The invention provides a method for recycling desulfurizer, which comprises the steps of filtration and desorption and ion exchange of the desulfurizer to be recycled in turn, wherein the iron exchange is realized by contacting the desulfurizer obtained by desorption with weakly basic epoxy type anion exchange resin; and the desulfurizer to be recycled refers to the desulfurizer obtained by contacting a mixed gas which contains sulfur dioxide. When the method provided by the invention is used, blockage is avoided in a desorption process, the desorption performance of the desulfurizer to be recycled is improved, the negative ions such as C2O4<2->, SO4<2-> and C<1-> in a heat stable salt in the desulfurizer to be recycled can be removed completely, and thus, the heat stable salt in the desulfurizer can be removed effectively and consequently the desulfurizer is recycled.