Within 24-48 hours of the injuries, the main of pathological change are hematoma and edema after the tissue tearing or fracture, with the reactive inflammation. Clinically, it is shown as the injuries of local red, swollen, heat, pain and dysfunction. Therefore, the treatment principle in this stage is to reduce blood flow, stop bleeding, avoid swollen, analgesia and reduce inflammation. In the pain relieving paster of water gel cold compress sheet, there are mint and other ingredients, which produce the cool and refreshing stimulation to the skin, and hence relieve pain feeling; In addition, through the evaporation of moisture, the temperature of the sticking part and the nearby skin surface drops, so as to cause the contraction of blood vessels, and to reduce the infiltrates of inflammation material. Therefore, the pain relieving paster is applicable to the early treatment of the distinctly red, hot and other local acute inflammatory pains such as injury and sprain, etc., which can significantly reduce inflammation reaction and hence have the function of detumescence.