Clean the affected area before using the cold compress cream, and then stick the plaster on the affected area. Cold compress is generally suitable for early local soft tissue injury, or patients with high fever and heatstroke. If the skin is red or damaged, it cannot be used. The cold compress cream consists of a backing layer, a gel layer and an anti-sticking layer. After cleaning the affected area and removing water stains with sterile gauze, the anti-sticking layer of cold compress can be uncovered, and then it can be directly attached to the painful or swollen part. Then gently press the cold compress with your hands to ensure that the plaster is in full contact with the skin. In addition, in order to ensure skin permeability, it is recommended to change the plaster every 12 hours. Cold compress can promote the contraction of local capillaries, thus alleviating the symptoms of local congestion, so it is mainly used for swelling symptoms of patients with early local soft tissue injury. If the trauma is serious, the skin is broken and the wound is bleeding, you can't use cold compress and plaster.