Fox odor in children is not necessarily precocious. The main cause of fox odor is the increase in hormone levels after reaching puberty, which stimulates the development of sweat glands in special areas, such as the armpits, popliteal fossa and breasts. But this situation is not premature and the age stage of hormone level increase is related, if puberty comes too early, fox odor will often come too early, if puberty development is late, the appearance of fox odor will be correspondingly late, because fox odor is accompanied by the arrival of puberty, the early and late puberty of each person is not exactly the same. People who have fox odor, if puberty is late, fox odor will also appear later, this situation is not premature.