There are many causes of hair loss in secondary school students, including genetic factors, physiological factors, disease factors and behavioral factors, as follows: 1. Genetic factors: some secondary school students are genetically influenced and their hair follicles are sensitive to androgens, especially dihydrotestosterone, which can lead to androgen-dependent alopecia, such as baldness with a certain genetic tendency; 2. Physiological factors: androgenetic alopecia is related to high levels of androgens in the body. 3, disease factors: secondary school students with endocrine disorders, anemia and other diseases can also lead to hair loss; 4, behavioral factors: secondary school students are under a lot of study pressure for a long time, their spirits are in a state of tension, and they often stay up late, which can easily lead to large fluctuations in hormone levels in their bodies, resulting in hair loss. Adolescent children in order to maintain their body, often dieting to lose weight, resulting in serious malnutrition, will also lead to the phenomenon of hair loss in the rest period. When hair loss occurs in secondary school students, they should pay attention to rest, avoid staying up late, pay attention to dietary regimen, supplement nutrition, can eat more black beans, black sesame and other black foods, when hair loss is more serious can go to the hospital for treatment.