Back and shoulder pain may be caused by the following reasons: first, myofasciitis, myofasciitis can cause pain on the inner side of the scapula and can radiate to the ipsilateral shoulder and the back, so it is necessary to conduct relevant investigations and examinations to exclude other diseases for diagnosis and treatment; second, gallbladder disease, when there is cholecystitis or gallbladder stones, it can also radiate back and shoulder pain. Third, heart disease, when the heart has a heart attack, angina pectoris, there will also be radioactive pain on the left side of the back and shoulders, when the heart ultrasound, imaging, electrocardiogram, blood tests for early diagnosis and treatment; fourth, lung disease, when the upper lobe of the lung has a tumor Fourth, lung disease, when the upper lobe of the lung has tumor or tuberculosis, inflammation, can also appear in the back and shoulder pain, then the lung CT examination should be performed for diagnosis and treatment.