Pubic hair more development thick and lush, caused by this situation has a variety of factors. 1, girls in puberty development due to androgen level secretion, pubic hair including axillary hair will grow, if androgen is slightly higher than the ordinary level, then the pubic hair may also be more and exuberant. 2, individual differences, racial differences also lead to the number of pubic hair of each individual is different. 3, the family genetic factors, especially men’s pubic hair by family Genetic influence mostly, including the beard. The above situation is generally considered to be in the normal range, do not need to worry and treatment.4, pathological factors are also available, such as polycystic ovary syndrome in women, will be manifested as body hair, dense pubic hair, this is due to the body’s testosterone hormone level secretion of exuberant caused by this will also affect the menstrual period, making the irregular menstruation, follicular development disorders, obesity, acne, and other symptoms, need to consult a doctor in a timely manner.