Shoulder pain after blowing a fan is mainly caused by cold, especially after cold, it is easy to cause spasm of the shoulder muscles, ligaments and joint capsule, which will cause obvious shoulder pain. If you have this condition, you should pay more attention to keep warm and avoid getting cold. You can apply heat to the shoulder joint and avoid lifting and carrying heavy objects during the painful period to avoid strain on the ligaments and joint capsule. If the pain is obvious, you can take oral non-steroidal anti-inflammatory drugs and blood circulation drugs to relieve the pain, and if necessary, you can perform acupuncture and physical therapy on the shoulder to relieve the spasm of the shoulder joint ligaments and joint capsule.