After the sprain should not be immediately plastered: first of all, cold compresses should be applied, cold compress time is about 5-10 minutes. Because after the sprain there will be small capillary rupture, there is blood leakage, through the cold compress can make capillary constriction, bleeding can be significantly reduced, and after the cold compress can effectively reduce the local inflammatory pain. After the cold compress, the injury can be elevated above the level of the heart, which helps to reduce the local inflammatory edema and swelling through the effect of gravity. Next, the plastering treatment, and plastering to keep the injured part in a relaxed state, to avoid being strained, the best external fixation of the support, so as to effectively protect the sprained part. The plaster is generally chosen to activate blood stasis, swelling and pain relief, such as wound pain relief, blood pain relief cream, can increase local blood circulation, promote the absorption of inflammatory metabolites.