Dry skin around the mouth is generally categorized into physiological and pathological. Physiological dryness of the skin around the mouth is mostly related to skin dehydration, can use petroleum jelly and other moisturizing products. Pathological dry skin around the mouth may be related to perioral dermatitis, which can be treated with topical glucocorticoid drugs under the guidance of a doctor. 1. Physiological: Most of the dry skin around the mouth is related to skin dehydration. It is recommended to use moisturizing ointment, such as hyaluronic acid ointment, petroleum jelly, vitamin E ointment and so on. Especially when the weather is dry, pay attention to protect the skin. 2. Pathologic: Most of them are related to perioral dermatitis, which may be accompanied by itching or pain. Glucocorticoid drugs such as prednisone, hydrocortisone and other ointments can be applied externally under the guidance of a doctor. Daily attention should be paid to the affected area to avoid contact with irritating products, pay attention to protect the skin, avoid scratching. If the skin around the mouth is dry and physiological reasons are excluded, it is recommended to go to the hospital in time. If you need to use medication, it is recommended to use it under the guidance of a doctor.