Abstract: Compound probiotics product was added in feed to study the effects on growth performance and immune function of broilers. One hundred and fifty one-day-old AA broiler chickens were randomly divided into 2 groups with 3 replicates in each group and 25 chickens per replicate. The pre-trial period lasted for 4 days,and the experiment lasted for 36 days. The results showed as follows： compared with control, the feed-meat ratios of tested group at the age of 12, 19, 26 and 40 days all decreased significantly （P〈0.05）, and the feed-meat ratio of tested group was lower 10.9% than that of control in the whole test cycle sifnificantly （P〈0.05）. The spleen index of tested group at the age of 33 days was higher 55.1% than that of control （P〈0.05）, and the Bursa index of tested group at the age of 26 days was higher 65.7% than that of control（P〈0.05 ）. Compared with control, the antibody titers of tested group at the age of 12, 19, 26, 33 and 40 days were increased by 36.6%, 40.4% （P〈0.05）, 37.7%, 34.7% and 38.8%, respectively, meanwhile the SIgA in the intestinal fluid of tested group were increased by 8.59%, 10.6%, 22.8%, 68.7% and 23.2% respectively（P〈0.05）. The IgG in the serum of tested group at the age of 19, 33 and 40 days were higher 17.9% （P〈0.05）, 40.9% （P〈0.01） and 41.1% （P〈0.01） than that of control, respectively. Both the E-C3bR and E-ICR of tested group at the age of 19 days were higher 105.9% （P〈0.05） and 14.3% （P〉0.05）than that of control, while there was no significant difference in the above indexes between tested group and control group at the age of 26 and 33 days. In conclusion, the supplementation of compound probiotics can improve the growth performance and immune function of broilers to some degree.