Itchy scalp may be caused by physiologic factors, seborrheic dermatitis, eczema and other factors. It is recommended to choose suitable toiletries and give glucocorticoid, antifungal, antihistamine and anti-infection medications. 1. Physiological factors: the use of unsuitable toiletries and hot water scalding may cause irritation to the scalp, leading to scalp itching. It is recommended to combine with your own hair quality, choose the appropriate toiletries. Avoid excessive washing, resulting in itchy skin. 2. Seborrheic dermatitis: Seborrheic dermatitis may be related to genetic, environmental and other factors, resulting in itchy skin. With a large range of skin lesions, it can be treated with topical selenium disulfide lotion. Severe itching can be treated with oral cetirizine and other medications. 3. Eczema: the cause of eczema is more complex, can occur in the scalp leading to scalp itching. If the symptoms are obvious, you can use topical halometasone and other drugs, oral cetirizine and other drugs. Itchy scalp is related to a variety of factors, it is recommended to avoid scratching stimulation induced infection, you can go to the hospital dermatology department to find the cause, under the guidance of the doctor standardized treatment. The medication should be used in accordance with the doctor’s instructions, do not self-medication.