Basic operation: 10-15 layers of gauze (can be pre-made wet dressing pad spare) immersed in freshly configured liquid, to be taken out after absorbing the liquid, screwed to the degree of not dripping, then put on the affected area, be sure to make close contact with the lesion, the size of the lesion with the equivalent, 15-20min each time, every 5-10min change 1 wet dressing gauze, 3-5 times a day. 1, cold wet dressing method: wet dressing pad immersed in the liquid, the temperature to 0 ~ 10 ℃ is appropriate, the wet dressing pad screwed to the degree of no drip, dressing on the affected area, keep the dressing wet for a long time, every 5 ~ 10min change 1 time; 2, hot wet dressing method: wet dressing pad immersed in the liquid, the temperature in 30 ~ 40 ℃ is appropriate, the operation method as above; 3, open wet dressing: wet dressing pad covered in the skin lesion without bandage, every 5 ~ 10min remove the wet dressing pad, every 5 ~ 10min remove the wet dressing pad, then dip into the liquid, repeat the basic operation; 4, closed wet dressing: wet dressing pad covered in skin lesions, then covered with oil paper or plastic cloth, etc., every 30min remove the wet dressing pad, then dip into the liquid, repeat the basic operation. Wet dressing therapy indications: open cold wet dressing is mainly used for skin flushing, swelling, erosion and exudation obvious, such as acute dermatitis, acute eczema, purulent or infectious skin disease; closed hot wet dressing is mainly used for chronic hypertrophic, keratotic lesions, or mild erosion, a small amount of exudate, such as chronic simple moss, chronic eczema, etc.