If the patient has shoulder and back pain, the reasons are as follows: First, coronary heart disease, which causes precordial pain and radiates to the left shoulder arm, accompanied by chest tightness, panic, sweating and other symptoms, the main auxiliary examinations include ECG, heart color ultrasound, etc. Second, shoulder and back pain may be caused by long-term muscle strain, and patients will generally be accompanied by shoulder and back soreness. Third, cervical spondylosis. When the disease comes on, it will cause neck pain and radiate to the shoulder and back of the affected side. It will assist in the examination of the main cervical radiographs and cervical magnetic resonance imaging.