Dry and rough skin can be caused by dry environment, lack of vitamins, diseases and other reasons. 1. Dry environment: winter climate is dry, low humidity, easy to cause dry skin, rough phenomenon. 2. Lack of vitamins: dry and rough skin should consider the body lack of vitamins, such as the lack of vitamin A will lead to dry, rough skin. 3. Disease: dry and rough skin should consider the impact of disease, such as lack of fat eczema, ichthyosis, etc., can also lead to dry, rough skin. Dry and rough skin can go to the hospital in time, clear cause, timely treatment.