Occasional stabbing pain in the heart can be caused by psychosomatic factors, intercostal neuralgia, heart disease, etc. 1. Psychosomatic factors: If the patient’s life and work are under too much pressure, or his mood fluctuates greatly, too nervous, anxious or depressed, he may experience stabbing pain in the heart, chest tightness and other symptoms. 2. Intercostal neuralgia: Intercostal neuralgia is the pain that occurs in the area innervated by intercostal nerves. Such as aortic aneurysm, pneumonia, tuberculosis, thoracic spine and rib injuries. Intense intercostal pain, the nature of paroxysmal burning and stabbing pain, can be reflected to the back of the shoulder. 3. Heart disease: angina pectoris, myocardial infarction is a common clinical chest pain disease. Angina pectoris chest pain is episodic, most of the pain behind the sternum, radiating to the left shoulder, angina pectoris lasts a few minutes each time, relieved by rest or elimination of triggers; if the chest pain is severe and lasts more than 30 minutes, accompanied by sweating, chest tightness and even a sense of suffocation, there is a progression of acute myocardial infarction may be. It is recommended that patients with stabbing pain in the heart go to regular hospitals to improve chest CT, cardiac ultrasound, myocardial enzyme profile, electrocardiogram and other tests, to further clarify the cause of the disease and active treatment.