Seborrheic alopecia is a kind of seborrheic dermatitis and a chronic superficial inflammation caused by abnormal sebum secretion. First of all, we should look for possible inducing factors and then treat them. There are many genetic, mental, immune, endocrine, hormone, diet, climate and even environmental changes, as well as the lack of trace elements, so patients should pay attention to rest, avoid mental stress, avoid eating too much sugar or fat food, eat more vegetables, and eat less spicy or alcoholic things. Don't scratch your hair and avoid excessive cleaning with hot water or alkaline things. Combined with drug therapy, such as vitamin B6 and vitamin B complex which inhibit sebum secretion. If the scalp itches, you can add antihistamines. Topical drugs mainly inhibit Malassezia, and ketoconazole lotion can be used 2-3 times a week. In addition, you can also use hair growth drugs, such as cystine and Astragalus Granules, minoxidil tincture for external use and domain hair nutrient solution to treat seborrheic alopecia.