Recombinant Anti-CD32B x Anti-CD79B Bispecific Antibody (IgG(L)-scFv) is formed by an IgG and two scFv moieties. The scFv fragments from an anti-CD32B antibody are fused to the C terminus of an anti-CD79B IgG light (L) chains, or vice versa. It is a type of appended IgGs, which is bispecific and tetravalent (2+2 antigen-binding valency). This BsAb can regulate B-cell modulation. It is designed for the research of Immune diseases therapy.