Patients with coronary heart disease, angina attack usually occurs when exerting force, chest pain, including emotional excitement, full meal or cold stimulation, these triggers will appear chest pain, accompanied by chest tightness, shortness of breath, panic, sweating symptoms. 2, seen in patients with intercostal neuralgia will appear after exerting force on the left side of the chest pain. Most of the patients with intercostal neuralgia have a fixed pain location and a long pain duration, and the pain is usually aggravated by a certain movement or external pressure. 3. Patients with cardiac neuralgia have obvious autonomic symptoms, and pain in the left side of the sternum occurs after activity, and the pain is aggravated after exertion. If necessary, medication can be given.