Abstract: The enhancements of NaOH and liquid digestate soaking pretreatments for the anaerobic digestion of wheat husk were compared. Different concentrations of NaOH (2%, 4%, 6%, 8%) at 80 ℃ for 2 h were investigated, and the results showed that 6% NaOH treated wheat husk obtained maximum methane yield of 199.5 mL/g, which was 191.2% higher than untreated raw substance (68.5 mL/g),and the digestion time was only 6 days. The results showed that after 5 days of pretreatment of wheat bran with liquid digestate, the effect of liquid digestate from chicken manure was apparently superior to that from cattle manure, and the maximum methane yield reached 130.8 mL/g, being equivalent to that from 2% NaOH pretreatment, but without additional chemical or biological pretreatment drugs. Thus, the two pretreatment methods could be selected and applied flexibly according to the practical demand.