The invention provides an
antigen-
antibody complex for preventing and / or treating avian influenza, which comprises inactivation avian influenza totiviruses which are used as
antigen and an immune body thereof, and the
mass concentration ratio of the
antigen and the immune body is more than 1. After entering organisms to perform initial immunization, the antigen-
antibody complex stimulates the organisms again to induce immunoreaction, and immune response is quick in speed and strong in reaction; the antigen-
antibody complex used as a carrier is more favorable for capturing and presenting antigen presenting cells and can also strengthen a breeder reaction of T cells effectively; purified totiviruses used as the antigen increase the molecular weight of the complex, are more favorable for
ingestion of immunocyte of the organisms on the antigen, cause the more extensive immunoreaction quickly, and have a significance for preventing avian influenza viruses of which the antigen is easy for variation. A preparation of the antigen-antibody complex does not need to use
solid carriers, does not cause intense stimulus on the organisms or initiates the organisms to generate an adverse reaction, and is simple to prepare and safe and convenient to use.