Pain in both shoulders is not a symptom of early stage of lung cancer, which usually has no obvious symptoms. Once the symptoms of lung cancer appear, most of them are cough, hemoptysis or even other symptoms occurring in middle or late stage patients. To exclude lung cancer, CT examination of lung must be performed so that tiny nodules can be detected and early detection can be achieved. Most of the pain in both shoulders is caused by shoulder impingement, frozen shoulder, supraspinatus tendonitis, deltoid bursitis, subacromial bursitis, soft tissue injury, such as tendon injury, etc. Usually, we need to pay attention to avoiding cold, avoiding excessive strain, and avoiding too many overhead throwing exercises, which can reduce the strain and injury of the shoulder joint and avoid the supraspinatus tendon function after shoulder impingement. You can also make the inflammation of the shoulder joint gradually subside through the heat effect such as hot compress and physiotherapy, and you can also properly apply ointment to activate blood circulation and remove blood stasis, soothe the tendons and improve the circulation. You should also take the initiative to perform functional exercises, do forward flexion, back extension or abduction every day, but avoid exceeding 90°, which can avoid the impact of the shoulder peak, through functional exercises can maintain joint mobility and avoid muscle atrophy. It is also important to develop good living and working habits, avoid smoking and drinking, avoid excessive work stress, and proper rest is good for maintaining a healthy life.