10-year-old girl hair loss consider with malnutrition, environmental factors, mental factors and other factors related. 1. Malnutrition: If you don’t pay attention to the girl’s diet, and often lack of nutrients, it may affect the supply of nutrients to the skin, and this symptom will appear. 2. Environmental factors: If you are often in a polluted environment, it may lead to skin metabolism abnormalities, so there will be hair loss symptoms. 3. Mental factors: some girls usually too much psychological pressure, mental tension may lead to hair nutrient supply and growth is affected, so this symptom will occur. Usually need to pay more attention to rest, eat more nutritious food, avoid disease. If the 10-year-old girl hair loss is serious, it is recommended that parents bring to the hospital in a timely manner, under the guidance of the doctor standardized treatment.