Purple potato powder is fresh high-quality purple potato as raw materials, broken, drying and other processes, the product is light purple to purple water-soluble powder, with its unique odor, no odor with a strong purple potato smell, not only retains the nutrients of purple potato, but also has coloring function. It has the characteristics of good water solubility, heat resistance, light resistance, good stability and strong coloring ability. The application field is very wide.