Sudden pain in the back of the scapula consider the following causes: 1, patients with acute coronary syndrome, such as acute myocardial infarction or unstable angina pectoris, will have sudden pain in the back of the scapula, while the pain in the precordial region accompanied by chest tightness, shortness of breath, weakness, sweating and even a sense of near death and other symptoms, the patient should be instructed to go to the hospital and promptly check the electrocardiogram and myocardial enzymology to clarify the diagnosis. 2, consider whether there is acute cholecystitis, if there is acute cholecystitis or acute pancreatitis, there will be sudden pain in the back of the scapula, accompanied by symptoms of the digestive system or fever and other symptoms, go to the hospital to check the ultrasound of the digestive system and blood tests to clarify the diagnosis.