Itchy facial skin is a common skin manifestation in clinical practice, and there are many reasons that can cause itchy facial skin, the common reasons in clinical practice are mainly the following: 1, cosmetics: due to the use of new cosmetics or poor quality cosmetics, resulting in facial skin allergies, resulting in erythema, papules with severe itching. 2, seborrheic dermatitis: due to abnormal oil secretion leads to The facial seborrheic dermatitis, seborrheic dermatitis can be accompanied by fungal infection will aggravate the clinical symptoms, facial flaking accompanied by itching, heavy eczema-like changes can occur. 3, acute eczema: facial eczema due to some cause, can appear erythema, papules, exudate, accompanied by severe itching symptoms. 4, dehydration: the resulting dry skin will appear itching, due to long-term dehydration will lead to dry skin, the gelatin layer is damaged, and thus pruritus. 5, other: ultraviolet radiation, dry climate, the surrounding poor living environment, can appear itchy skin on the face.