Abstract: This experiment was conducted to study the effect of astragalus polysaccharide (APS) on growth performance, viscera index, and pancreatic digestive enzyme activities of broilers. 256 healthy 1-day-old avian broilers were randomly assigned to 4 treatment groups. Group CK, A, B and C received a basal diet supplemented with 0, 0.2%, 0.4% and 0.6% APS respectively for 14 d. The results showed that ①There were no significant effects of APS on growth performance both in 7-day-old and 14-day-old broilers (P>0.05). ②There were significant effects of APS on viscera index in 7-day-old broilers (viscera index in group A, B and C was higher than that in the CK, there were significant differences of liver and pancreas index between group B and the CK, there were significant differences of pancreas index between group C and the CK and pancreas index in group B and C were significantly higher than that in group A), but no significant effect on 14-day-old broilers. ③Pancreatic lipase and trypsin activity in group A, B and C was higher than that of the CK. For 7-day-old broilers, pancreatic trypsin activity in group C was significantly higher than that in group A, B and the CK; pancreatic lipase activity of group C was significantly higher than that of group A and B. For 14-day-old broilers, pancreatic lipase activity of group A, B and C was higher than that of the CK, and that of group C was significantly higher than that of group A and B. There was no significant effect of APS on pancreatic amylase activity both in 7-day-old and 14-day-old broilers. These results indicated adding of APS had no significant effects on the growth performance of broilers but could increase pancreatic digestive enzyme activities and adding of 6% APS was more suitable to enhance those activities.