Fully Human Anti-SA Hlα Antibody can neutralize the Hlα released by SA to avoid Immune downregulation to B cells and to improve immune response. Hlα toxin is the most widely expressed one among toxins SA produced, but currently there is no Hlα antibody drug launched in the world. The product has good safety and its preclinical studies have shown good Hlα toxin neutralizing activity. It is expected to solve the problems of high mortality, resistance to treatment, and side effects from SA infection.