Minoxidil is a common clinical drug for seborrheic alopecia and alopecia areata, resulting in hair loss and hair thinning, has a certain effect, and thus can treat hair loss. However, patients are not recommended to use it blindly on their own, and should go to a regular hospital for skin examination to clarify hair loss and then carry out targeted treatment. Under the guidance of professional doctors, patients will apply Minoxidil externally, which can act on the dermis of the scalp, so that the local blood circulation of the scalp can be significantly improved, promote the formation of hair follicles, so that new hair grows out, and also can act on the roots of the hair that has not been shed, so that the hair is stronger. In addition, if the patient is suffering from seborrheic alopecia and has a strong scalp oil secretion, more dandruff and itchy scalp, other drugs such as compound sulfur lotion and ketoconazole lotion can be used together to improve the scalp discomfort. Since this drug has a requirement of use time, usually over 6 months, thus patients may experience some discomfort symptoms, commonly such as increased body hair, skin flaking, redness and swelling. Therefore, when patients have the need to use, they should follow the doctor’s instructions to use it regularly and quantitatively, and should not use it blindly on their own. In addition, because this drug can relax the smooth muscle of blood vessels and play a role in vasodilatation, thus heart failure, coronary heart disease and other cardiovascular disease patients are prohibited. In daily life, patients with hair loss should try not to eat too much sweet, greasy, spicy and stimulating food, and should not stay up late at night, but should work and rest regularly to ensure sufficient sleep time to improve the symptoms of hair loss.