The symptoms of angina are as follows: 1, typical symptoms: boredom, swelling, burning pain, etc., and radiating pain involving other parts of the precordial area, which can be relieved by rest or nitroglycerin, usually lasting several minutes or ten minutes, rarely more than 30 minutes; 2, atypical symptoms: not related to physical strength, such as night rest or early in the morning, sudden onset of boredom in the precordial area, or no pain only boredom; some people even dizziness or sudden fainting, as well as nausea, vomiting and other clinical manifestations.