Muscone is the dry goods of secretion of the cystic glandular from male musk deer which belongs to animal of musk branch. As one of the world's three best fragrances, with its special soft and elegant flavor, muscone plays the role of increasing fragrance and fragrance stabilizer, a kind of widely clinical used valuable drugs of traditional Chinese medicine for its functions of aromatic cottoned on inducing resuscitation, connecting channels and smoothening away pains. By analysis and comprehensive study of natural musk, the muscone (3 - methylcyclopentadecanone) is determined as the main efficacy composition, with the general average content of 1.2% to 3.5%. Muscone is the irreplaceable component of natural musk.