The natural ecological environment such as temperature difference, fertile soil and abundant sunshine in the Huining area of ​​Gansu is most suitable for the cultivation of special oil crops such as flax. It is a national industrial pollution belt, and the linseed oil produced in this area, α- The linolenic acid content is as high as 50% or more, which is much higher than other planting areas. Flaxseed oil is the most effective way to supplement linolenic acid, and linseed oil activity is also the first.