Extensor digitorum longus muscle soreness may be caused by overwork or chronic strain, the cause of different treatment methods are also different, including general treatment, physical therapy, drug therapy and so on. 1. Excessive exertion: for example, prolonged exercise may cause soreness of the extensor digitorum longus muscle, need to pay attention to reasonable rest, you can use hot towels on the local hot compresses to accelerate blood circulation and promote metabolism, which will help to improve the symptoms of soreness. 2. Chronic strain injury: prolonged exposure to cold or suffered an injury, may lead to the existence of local aseptic inflammation, will cause the symptoms of pain and soreness, can be improved by using non-steroidal anti-inflammatory analgesic drugs, such as ibuprofen, celecoxib, etc., but also with physical therapy, such as baking electricity, infrared radiation. In the course of treatment, it is necessary to listen to the doctor’s guidance, the rational application of drugs, do not unauthorized use of drugs.