Closure injections are mainly given in locations where there is significant pressure and pain in soft tissues such as muscles, tendons and ligaments. Most of them are due to chronic injury as well as strain injury caused by aseptic inflammatory lesions, which stimulate the peripheral nerves around them, and thus pain is felt. After conservative treatment is not effective, you can take the way of closed needle, commonly used drugs are mainly prednisolone acetate, compound betamethasone injection and lidocaine hydrochloride injection, including hormone and anesthetic two, can be effective through the closed needle injection to relieve the local inflammation, after the inflammation is significantly reduced, the symptoms of pain can be improved. Coupled with the drugs in the lidocaine hydrochloride injection, which is a local anesthetic drug, after the injection can effectively reduce the local pain sensation, promote the recovery of the injury location. However, the closed needle can only relieve the local symptoms but can not eliminate the root cause, so we should pay attention to other related treatments, such as the location of the injury must be allowed to fully relax and rest, to avoid continuing activities and stretching, otherwise it will lead to further aggravation of the injury. In addition, the closed needle can not be used too much, easy to lead to soft tissue elasticity, toughness decline, become more fragile.