The main wet dressings are the following: first, Vaseline gauze blocks, usually made by the hospital itself, which are made by sterilizing the surface of the gauze blocks with Vaseline and are usually used for wounds such as superficial abrasions or ulcers. Secondly, alginate dressing, which is extracted from natural seaweed plant, is suitable for wounds with medium or large amount of exudate and necrotic tissue. Thirdly, hydrogel dressing, which can promote the growth of epidermis and granulation, is not recommended for wounds with more exudate. Fourth, silver ion dressing, which is mainly metal silver ion as the main component, can sterilize and control infection, promote the growth of granulation tissue, and dissolve the role of necrotic tissue. In summary, the wet healing dressing will be more effective.