To isolate fungus strain with high-efficient decolorizing ability, fungus strains from locally collected rot wood were screened and separated. The fungus strains'' 26S rDNA was sequenced by fungi rDNA D1/ D2area methods. The fungi strain was immobilized by peanut hulls and other materials as carrier, and the immobilized fungi was used to treat simulated dye wastewater containing carmosine B, metanil yellow G, direct blue 5B and direct black 19dyestuffs. The fungi strain was isolated and identified as Mucor sp., named as BFL-5. The strain Mucor sp. BFL-5was immobilized and then used to degrade four types of dyes with degradation over 90% in 12h. The strain Mucor sp., BFL-5was potential for decolorization of dyes effluent.