Itchy scalp may be due to unclean scalp, seborrheic dermatitis, scalp psoriasis and other factors, need to clarify the cause of the disease, targeted treatment, common treatment modalities are to maintain scalp hygiene, if necessary, the use of ketoconazole, tretinoin and other medications, but also assisted by physical therapy. 1. Scalp unclean: long-term unwashed hair, frequent sweating and other factors will lead to an increase in the accumulation of foreign matter on the scalp, stimulating the scalp itchy symptoms, it is recommended that patients improve personal hygiene, wash their hair diligently to maintain a clean and dry scalp and hair, and diligently change the pillowcase and other personal items. 2. Seborrheic dermatitis: Seborrheic dermatitis of the scalp can be manifested as erythema and papules covered with greasy scales, which can be scattered and distributed, or may involve the whole scalp, often accompanied by itching and odor. Ketoconazole and tacrolimus cream can be applied locally under doctor’s guidance, and antihistamine such as cetirizine can be taken orally to relieve itching when itching is intense. 3. Scalp psoriasis: in addition to the symptoms of scalp itching, there may also be scalp scaly thickening, hair into bundles, a large number of symptoms such as flaking, but generally no obvious hair loss. It can be treated with medications such as trimethoprim, carbotriol and etanercept under the guidance of a doctor; it can also be supplemented with physical therapy such as photochemotherapy and sunbathing. There are many other factors that lead to scalp itching, such as lice, mosquito bites, contact dermatitis, etc. It is recommended that after life adjustments, the symptoms do not improve, or accompanied by scalp erythema, dandruff, and other symptoms of the patient in time to seek medical attention, under the guidance of the doctor to carry out the relevant examination, in order to specify the cause of the symptomatic treatment, to avoid the use of medication, so as to avoid delaying the condition.