Horse serum is collected from the blood of healthy horses as raw material. It is collected aseptically in a closed system and filtered by micropores. The characteristics of horse serum are clear liquid, no phage, ultra-low endotoxin, no hemolysis, no foreign body, no bacteria, mycoplasma mycoplasma, Chemicalbook, etc., which has excellent effect on promoting cell growth and reproduction, and is suitable for cell, tissue and organ culture, cell line preservation, and monoclonal antibody development. It is one of the important medium for hospitals, scientific research institutions, animal vaccines and biopharmaceutical manufacturers.