Heart pain usually refers to angina pectoris, and common causes include coronary artery disease and myocardial infarction. As lesions in internal organs can cause pain in the corresponding body surface area, angina pectoris often manifests as chest pain that radiates to the left shoulder and left arm. Chest pain is a common clinical symptom and is seen in a variety of diseases. Although a variety of diseases can appear chest pain, but combined with the age of onset, chest pain, chest pain, the nature of chest pain, the duration of pain, pain factors, etc., can still play a certain role in differentiation. Such as angina caused by chest pain in the posterior sternum and anterior region of the heart or subxiphoid process, can be radiated to the left shoulder and left arm, pressure-like pain and have a sense of suffocation, such as myocardial infarction, the pain is more intense and fear, a sense of imminent death. Angina pectoris attack lasts for a short period of time, commonly triggered by exertion and stress, and usually lasts for a few minutes and can be relieved. Chest pain caused by other diseases has different characteristics, and it is difficult to diagnose accurately through the performance of chest pain alone, and it needs to be combined with accompanying symptoms and relevant examinations to make a diagnosis. If chest pain occurs, do not be negligent, and be sure to consult a doctor in time to avoid delaying the condition.