Fast beard growth is mainly due to individual metabolism, heredity, disease and other factors. 1. Metabolism: young men have fast hair growth and their beards may grow thick and fast. Because the hair follicles at the beard have a more vigorous metabolism than the hair follicles at the hair, the high level of male androgens can easily promote hair growth, resulting in a thick, fast-growing beard. 2. Heredity: Heredity, ethnicity and other factors can also lead to the emergence of beard turnover faster. 3. Disease: Hirsutism and other diseases cause the beard to grow abnormally fast, if necessary, you can go to the hospital, for relevant examination to clarify the cause. If a woman has a beard, it is recommended to go to the hospital in time to check the endocrine function, sex hormone levels, etc., to find out the cause of the problem, and symptomatic treatment.