A 8-week feeding experiment was conducted to evaluate the effects of housefly larva protein on the growth of Litopenaeus vannamei.Four diets(ABCD)were formulated.D,which was a practical diet,was served as a control group.A,B and C groups were formulated respectively replacing 5%,10% and 15% fish meal with housefly larva meal.At the end of the feeding experiment, growth performances of body length,total length and width of carapace were calculated.The results of the feeding experiment showed that there were no significant differences in growth performance among A,B groups and D group(P > 0.05),but there were very significant differences in growth performance between C group and D group(P < 0.01).The results suggest that the dietary supplementation of pertain level of housefly larva meal can improve the growth performance in Litopenaeus vannamei,and the appropriate amount of housefly larva meal can be used to substitute partial fish meal in prawn manufactured feed.