The sudden growth of beard in female students is usually caused by the elevated level of androgenic testosterone in the body, which usually cannot be eliminated by itself and requires timely consultation with endocrinology for timely treatment. Testosterone in women is the steroid hormone, or androgen, which is secreted by the ovaries and adrenal glands of women. The normal value is usually 0.7-3.1 nmol/L. The more common causes of elevated testosterone are polycystic ovary syndrome (34%), followed by hyperadrenocorticism (29%). Again, it is seen in follicular membrane hyperplasia and adrenal cortical hyperplasia. In addition, hyperinsulinemia can stimulate the ovaries to secrete large amounts of androgens, resulting in hypertestosteroneemia, about 28% of which are of unknown origin. Therefore, elevated androgens in women, resulting in sudden growth of beard, usually cannot be eliminated on their own and need to be treated according to the specific condition. If testosterone is too high in women, patients can also take oral testosterone suppressants. Usually after 3-6 months of conditioning, testosterone can be restored to normal levels.