Recombinant Anti-CD32B x Anti-CD79B Bispecific Antibody (scFv-IgG) is formed by an IgG and two scFv fragments. The scFvs from an anti-CD32B antibody variable domain are respectively connected to the N terminus of the anti-CD79B IgG heavy chains or light chains to form scFv-(H)IgG or scFv-(L)IgG. It is a type of appended IgGs and has 2+2 antigen-binding valency. This BsAb can regulate B-cell modulation. It is designed for the research of Immune diseases therapy.