The invention relates to a method for preparing 
auricularia polytricha culture material, needing the following materials by the weight percent: 35-55 of cotton seed hulls, 25-45 of rice 
bran, 10-16 percent of mixed wood dust, 1.5-2 percent of corn cob, 0.5-1 of 
straw, 0.5-1 
calcium superphosphate, 0.5-1 of plaster, 1.5-2 of beanstalk 
powder, 0.1-0.3 of 
oxygen increasing 
powder, 0.1-0.3 of nitro-
phosphor-
potash compound 
fertilizer, 0.1-0.3 of mold resisting liquid and 0.5-0.8 of 
calcium superphosphate. The method for preparing 
auricularia polytricha culture material comprises the following steps: the cotton seed hulls, the rice 
bran, the mixed wood dust, the corn cob, the 
straw and the beanstalk 
powder are taken according to the weight percent, mixed together and poured into a 
pulverizer to be pulverized into mixture with granules of about 80 meshes; the mixture is taken out; the superphosphate, the plaster, the 
oxygen increasing powder, the nitro-
phosphor-
potash compound 
fertilizer, the mold resisting liquid and the 
calcium superphosphate are added to the mixture; the new mixture is poured into a stirrer to be stirred for about 70 min; the stirred mixture is taken out and then put into a 
fermentation tank; water is added to the stirred mixture at the ratio of 1:1.2-1.3; and the stirred mixture is stirred again and stacked; and the stacked mixture is sealed by a thick 
plastic film to be fermented for 10-12h, therefore, the qualified 
auricularia polytricha culture material is prepared.