The causes of thinning hair on top of the head of girls are more, including genetic factors, mental factors, endocrine dysfunction, malnutrition, skin diseases, chemical factors, drug factors and other reasons, patients can be targeted treatment according to the cause. 1, genetic factors: because of genetic factors caused by hair loss no better treatment, you can keep beautiful through hair transplantation, wear wigs; 2, mental factors. Due to mental stress caused by thinning hair on the top of the head, should be in daily life should pay attention to adjust the rhythm of life, reduce mental stress, avoid regular mood swings, irritability, overwork, insomnia, etc.; 3, endocrine dysfunction: postpartum, menopause, or hyperthyroidism, hypothyroidism and other endocrine diseases patients with thinning hair. In addition to drug treatment according to the cause, the routine of life should be scientific, do not often stay up late, so as not to destroy the normal physiological rules, aggravating the problem of hormonal imbalance; 4, malnutrition: daily diet should pay attention to balanced and adequate nutrition, and can be appropriate intake of food helpful to nourish blood and hair growth, such as sesame; 5, skin diseases: due to ringworm, balding folliculitis, carbuncles, exfoliative dermatitis and other skin diseases caused by Hair thinning on the top of the head is usually temporary, and the hair may be regenerated after oral or topical medication. However, hair thinning caused by seborrheic alopecia, hair loss is relieved after the application of drug treatment, and may not be able to return to the previous state of lush hair, can choose hair transplantation, transplantation of hair follicles behind the occipital area to the top of the head, it is possible to restore the lush hair; 6, chemical factors, drug factors: if tumor patients due to radiotherapy resulting in hair thinning, do not worry excessively, generally 1-2 months after the end of chemotherapy The hair will start to grow out gradually in 1-2 months after chemotherapy.