Black hair on the sides of the nose is usually normal, but it can also be caused by factors such as excessive androgen production. When the excessive secretion of androgen in the organism, it may be due to factors such as adrenaline abnormality, insulin damage, abnormal ovarian function, and improper diet. Excessive secretion of androgens can be properly consumed with soy-based food, which can make estrogen active and promote estrogen secretion, and try to avoid eating food with too much sugar or spicy stimulating food. If you are a woman, you can also use drugs such as estradiol valerate tablets and ethinyl estradiol cyproterone tablets under the guidance of your doctor for treatment. In daily life, attention should be paid to rest, appropriate exercise, improve the body’s immunity, and avoid overwork. Patients are advised to visit hospitals in time and choose reasonable treatments under doctors’ guidance.