Vanilla: Sometimes called vanilla, it is a plant with unique fragrance, which usually has the function of seasoning, making spices or extracting essential oil, and many of them also have medicinal value. Although the so-called vanilla mainly refers to the leaves of green plants, it includes flowers, fruits, seeds, bark, roots and so on, and all parts of plants may be used as medicine. Vanilla is an important part of traditional medicine all over the world, which provides most medicinal materials that can be used to treat diseases. However, due to population growth and urban expansion, the natural environment for plant growth has been destroyed, and the rise of chemical pharmacy has gradually declined in modern times.