2. The successful development of peony seed oil is not only a gift in the snow, but also a icing on the cake for the present situation of edible oil in China. The icing on the cake shows that peony seed oil has high nutritional value. According to the National Grain and Oil Quality Supervision and Inspection Center, the content of unsaturated fatty acids in peony seed oil is as high as 92.26%, especially the content of α -linolenic acid is as high as 42%, and its quality is obviously higher than other edible oils. Giving charcoal in the snow means that peony seeds have high yield per unit area and high oil yield. Oil peony began to bear fruit in the third year, and the yield per mu reached 400 kg from the fourth year to the fifth year to the peak period, which was much higher than that of traditional oil crops such as soybeans and peanuts. It is used for medical care and is also a "plant brain gold" to protect human health. Data show that peony seed oil contains a lot of essential amino acids (8.047%) and unsaturated fatty acids (92.42%). Among them, α -linolenic acid (more than 42%) is an important component of human brain cells and tissues, and it is an indispensable polyunsaturated fatty acid that cannot be synthesized and replaced by human body. Also known as "blood nutrients" and "plant brain gold", this substance only exists in deep-sea plants and is difficult for human beings to obtain.