Shoulder pain after playing badminton is considered to be related to excessive exercise and strain, and frequent exercise is prone to periarthritis of the shoulder. You can apply a hot towel to the painful area for 15-20 minutes each time to improve microcirculation. Severe pain can be treated with oral pain medication, commonly used is non-steroidal anti-inflammatory drugs, you can take Nimesulide dispersible tablets or apply diclofenac pain. During the treatment period, it is important not to put weight on the shoulder, and to perform shoulder joint activities, circular movements and functional exercises, so that the symptoms can be gradually improved. Lidocaine hydrochloride injection or tretinoin acetate is commonly used. You can also apply nerve-nourishing drugs, mainly B vitamins and oral mecobalamin tablets.