Abstract: Pulp bleaching method using SKB-1152 strain which is a lignin-degrading strain having high lignin degrading activity and pulp bleaching activity, or the culture produced using the SKB-1152. When the SKB-1152 strain of this invention or the culture produced using the same is to bleach pulp, the same bio-bleaching method as in the prior report may be used and there is no need for any special culture conditions. The SKB-1152 strain of the invention can be collected from decolorized areas formed in a culture rue medium which contains, lignin and/or pulp containing residual lignin, and being inoculated with a isolating source sample and cultured.