The pain in the arm after working too much is mainly caused by the workload of muscle tissue showing excessive tension fatigue and strain, or there is a slight muscle fiber damage, it will produce obvious bruising and inflammation, resulting in obvious pain symptoms, especially after working with cold will lead to further aggravation of the pain. The following measures can be taken in this case: First, the arm must be fully relaxed, avoiding continued activity, and try to choose a support for the elbow joint when sitting, so that the arm muscles can be in a relaxed state as much as possible. Second, strict warmth, not to appear cold, after the cold will lead to the aggravation of local inflammatory edema, will not be conducive to the recovery of increased symptoms. Third, you can go to the hospital for acupuncture, massage and physical therapy, which can effectively unblock the meridians and relax the muscles, improve blood circulation and increase venous return. Fourth, you can take oral anti-inflammatory and pain relief as well as muscle relaxants, such as nimesulide, ethylphenidate hydrochloride tablets, diclofenac sodium enteric capsules, which can effectively reduce local inflammatory stimulation, relax muscle tissue and help the recovery of injured muscles.