Dandruff is large and numerous, mostly considered by seborrheic dermatitis, ringworm, psoriasis and so on, and its treatment usually has general treatment, drug treatment and other methods. 1. Seborrheic dermatitis: dandruff can be caused by seborrheic dermatitis, which is usually accompanied by excessive oil production from the scalp and fungal infections, so shampoos containing ketoconazole can be used, and shampoos containing coal tar can also be used. You can also use topical calcium-modulated phosphatase inhibitors such as pimecrolimus ointment and tacrolimus ointment. 2. Tinea capitis: Tinea capitis is caused by fungal infection, you can use antifungal drugs, including oral itraconazole, or terbinafine, while you can use topical miconazole cream, ketoconazole cream and so on. In addition, patients need to pay attention to personal hygiene, avoid sharing daily necessities with others. 3. Psoriasis: psoriasis can be characterized by excessive scales on the scalp, which can be treated with glucocorticoid drugs such as Hasinide solution, and vitamin D3 derivatives such as Calcipotriol can also be used externally. If necessary, oral medications such as Avitamin A and methotrexate can be taken. The phenomenon of excessive dandruff, timely visit the hospital for examination, clear diagnosis. Symptomatic treatment. The use of the above drugs need to follow the doctor’s advice.