Pain at the back of the left shoulder near the spine can be treated in orthopedics, cardiology and other departments, taking into account its clinical manifestations and accompanying symptoms. 1. If pain at the back of the left shoulder near the spine occurs after prolonged sedentary activity or sudden exercise, consider myofasciitis, cervical spondylosis, soft-tissue strain, etc., and consult an orthopedic surgeon. 2. If dizziness, chest pain, dyspnea and other symptoms occur at the same time as pain at the back of the left shoulder near the spine, the occurrence of coronary heart disease should be considered, and timely consultation should be made in the Department of Cardiology. Therefore, for pain in the back of the left shoulder near the spine, you can choose the appropriate department according to your own situation and follow the doctor’s instructions for treatment.