The 30-year-old eyebrows may be longer and genetic physiological factors related to this situation without treatment, may also be the disease caused by the body secretion of androgen excess caused by the need to actively treat the original disease. 1, the eyebrow is long most of the genetic factors determine belongs to the physiological reasons, this situation does not need to be treated, there is no effect on the body. 2, if the body of a certain disease caused by androgen increase, first of all to treat the primary disease, such as pituitary tumors caused by hormone level changes to be surgical treatment. After the exclusion of physiological factors leading to longer eyebrows, it is recommended to consult a hospital and follow the doctor’s instructions.