Chest pain on the left side of the chest, is likely to be a sign of heart disease, such as coronary heart disease, angina pectoris, acute myocardial infarction caused by the left side of the chest pain, usually this pain in the form of pressure pain, and will be accompanied by chest tightness, palpitations or some of the patients will also appear to have dizziness, cold sweats, pallor, weakness and other symptoms of the limbs. Usually, if the above symptoms occur, it is necessary to go to the hospital and have an electrocardiogram and a blood test for troponin, which can basically confirm the diagnosis. If it is an acute myocardial infarction, thrombolytic therapy or vascular intervention must be given immediately. In other cases, if cardiac problems are ruled out, it is usually soft tissue problems in the chest, such as costochondritis or soft tissue contusions or sprains, which are minor problems that can be treated by applying ointments to reduce swelling and pain, invigorate blood circulation and remove blood stasis, or by taking non-steroidal anti-inflammatory drugs, which will naturally improve the condition.