Abstract: 40 fatting pigs, body weight about 50kg for each one,were randomly divided into 5 groups,4 replicates for each group and 2 for each replicate.One of these groups was used as the contol group,other groups were used as test groups,groupI,groupII,groupIII and groupIV.The control group was fed basic diet,groupI、II、III were fed the diets containing alfalfa meal in different level (10%、15％、20％) and groupIV was fed the diet 20％ alfalfa meal and 01% cellulase.The experimental period was 60d.The results showed:(1)Three test groups,groupII,groupIIIand groupIV,had higher daily intake and daily gain than the control group,and groupII and groupIV had higher feed conversion rate than the control group.(2)Compared with the control group,there were more apparent digestibility of nutrients for groupI、II,however,groupIII、IV had similar digestibility with the control group.The digestibility of groupIV was higher than groupIII one,showed that it was useful to add 0.1% cellulase enzyme for diet of higher amount of alfalfa meal.(3)There were no significant difference in eye muscle area,meat colour and marbling among groups,however,because of adding suitable amount of alfalfa meal,these ones,back fat thichness was dropped , killing out percentage and thin meat ratio were improved.(4)Adding alfalfa meal in fatting pig,s dietary,groupI、II、III、IV had significant improvement in GH、Ins、IGF-1 comparing with the control one,but there were significant derease in GLUand CHU.The study showed that it was best to add 15% alfalfa meal in diets of fatting pigs among all groups,so it should be recommend in diet.