The effects of ^60Co-γ irradiation and cellulose hydrolysis on the saccharification of Chinese silvergrass were investigated in this paper. The optimal conditions including irradiation dosage, enzyme amount, enzyme hydrolysis temperature, enzyme hydrolysis time and solid/liquid ratio were obtained by orthogonal experiments. The results showed that the reducing sugar production was 132.59mg/g when Chinese silvergrass was treated with 270U/g cellulase at 40℃ for 60h and solid/liquid ratio was 1:65 without irradiation. The reducing sugar produc...