Abstract: In order to study the effect of forages silaged by enzymes preparation on hog growth performance and pork quality, four silage forage feeding treatment groups were used. Hogs in groupⅠ, Ⅱ, Ⅲ, Ⅳ were fed by basal diet with hybrid Pennisetum adding wheat bran, hybrid Pennisetum adding wheat bran and cellulase, hybrid Pennisetum adding wheat bran and cellulose microorganisms broth and hybrid Pennisetum adding wheat bran and lactobacillus, respectively. Hogs in the control-group (CK) were only fed by the basal diet. The average daily gain (ADG) was calculated after 75 days. Pork pH and color were determined respectively one hour and 24 hours after slaughtered. Muscle marble and water holding capacity (WHC) were also determined 24 hours after slaughtered. The results showed that compared with the sows, daily gains of the boars in the four treatment groups and the CK group increased by 7.8%, 6.7%, 12.2%, 1.1% and 10.7%, respectively. Compared with the control group, ADG of the boars and sows in the four treatment groups increased by 3.31% and 5.58%, respectively. There was no statistical difference at pH₁, pH₂₄ and pork dry weight between the treatment group and the control group (P>0.05). Pork dry weight of the boars slightly decreased. But pork dry weight, color and marble value of the sows increased. Meanwhile water holding capacity especially in the boars increased. All the findings clarified that the forages silaged by enzymes preparation could be used not only to improve the average daily gain but also the pork quality. It offered good foundation for exploring of forages silaged by enzymes preparation.