Objective: To study the effect of Astragalus Polysaccharide ( APS ) injection as avian influenza immune adjuvant : 60chickens were randomly divided into 5 groups, with different dose and injection method of contrast experiment, after first immunization every 7 days blood sampling time, fifteenth days for the two immune, blood two times again, detection of serum vaccine antibody : half dose group ( / a ) improve results significantly (P < ), total dose group ( / a ) improve results significantly (P < ); separation injection group and mixed injection group, the effect was not significant ( P > ).Conclusion: Astragalus Polysaccharide for improving Chicken Immunized with avian influenza vaccine immune effect has significant effect, astragalus polysaccharides with avian influenza vaccine injection mixed with the influence, in the practical application as an immune adjuvant can play a good effect.