Researches show the ω-3 series of unsaturated fatty acid such as alpha-linolenic acid has unique effect in building biomembrane structures and functions. Alpha-linolenic acid will create DHA, DPA and EPA after it enters human body under the effect of enzymatic. Perilla seed oil contains a large amount of alpha-linolenic acid. It can lower the blood lipid and blood pressure, prevent angiocardiopathy, restrain colon cancer and galactophore cancer, resist irritability dermatitis and asthma, protect liver and beautify skin.