The reason why the face is dry and still oily may be caused by excessive oil secretion of the skin. Common diseases include seborrheic dermatitis and rosacea, which need to be analyzed specifically. 1. Seborrheic dermatitis: associated with Malassezia colonization, increased lipids, impaired skin barrier function, immune response and individual susceptibility. It is commonly seen in seborrheic areas such as the head, face and chest and back, and patients present with erythema, rash, dry and flaky skin, or oily symptoms. 2. Rosacea: It is a chronic inflammatory skin disease with persistent erythema and capillary dilatation that occurs in the middle of the face, and can be complicated by acne and seborrheic dermatitis. It is often accompanied by dryness, burning or stinging of the skin, and if complicated by seborrheic dermatitis, oiliness may occur. There may be other reasons for the dryness and oiliness of the face, and it is recommended that the patient consult a doctor in time to clarify the cause of the disease and make targeted treatment.