If the patient currently has sudden heart pain, it may be caused by intercostal neuralgia, coronary angina, and other diseases, as follows: 1. Intercostal neuralgia: If the pain is transient or pinprick-like pain, it is highly considered to be caused by cardiac neurosis, and it is also important to see if it is intercostal neuralgia. 2. Coronary angina: If a sudden pain attack lasts for 3-5 If the pain is suddenly onset and lasts for about 3-5 minutes, the pain site is mainly limited to the left precordial area, or there is pressure pain behind the sternum, and this pain is also accompanied by radiation-like pain, for example, it can radiate to the left posterior back, left shoulder, left forearm, we should highly consider whether it is caused by coronary angina. 3, other diseases: there are some people who have this pain, and it is not excluded that it is due to pulmonary embolism, aortic coarctation, or it may be relatively deep coronary artery myocardial bridge, or due to microcirculatory dysfunction. In order to further clarify the diagnosis, chest X-ray, arterial blood gas analysis, cardiac ultrasound, electrocardiogram, and even coronary CT can be improved.