Growing gray hair at the age of 14 in junior high school is usually related to genetic factors, vitiligo, excessive mental stress and other reasons. The general treatment, medication and so on can be carried out according to the different causes. 1. Hereditary factors: white hair caused by heredity is usually caused by the relevant gene mutation, there is no effective treatment, you can use regular safe hair dye hair coloring. 2. Vitiligo: is a common acquired pigment loss skin mucosal disease, can involve the hair follicles, resulting in hair white, can be used topical glucocorticoid such as halometasone, or calcium-modulated phosphatase inhibitors such as tacrolimus, etc., but also the use of phototherapy NB-UVB and 308nm excimer laser and other physical therapy. 3. Excessive mental stress: pay attention to rest in daily life, drink more water. Learn to release pressure, appropriate exercise to enhance physical fitness, avoid overwork, stay up late and so on. You also need to eat a balanced diet, suggesting high protein, high vitamin foods. 14-year-old junior high school growing gray hair may also have other reasons, it is recommended to go to the hospital in time for examination and treatment for the original disease.