The redness of the nose and cheeks and forehead is considered to be caused by seborrheic dermatitis, which can be improved by general treatment and medication. Seborrheic dermatitis is a common chronic inflammatory skin disease, mostly occurring in the head and face seborrheic parts. Mainly manifested as cheeks on both sides of the nose, forehead eyebrows around and around the mouth erythematous rash, the surface is attached to greasy scales or scabs, often accompanied by varying degrees of itching. The cause of the disease is still unclear, and can be repeated. Patients should pay attention to maintain a regular life, sleep enough, regular diet, avoid too spicy stimulating food. At the same time, local cleaning and moisturizing, avoid excessive friction of the affected area. Sulfur and tacrolimus ointment can be used externally as prescribed by the doctor. If necessary, oral antihistamines such as ebastine or compound glycyrrhizin tablets can be used to regulate skin inflammation. There are more reasons for the redness of the cheeks and forehead on both sides of the nose, and it is recommended to go to the regular hospital in time for standardized diagnosis and treatment.