The causes of sudden chest pain in the next few seconds are generally categorized into physiological and pathological causes, pathological causes are cardiovascular diseases, respiratory diseases and digestive diseases. 1. Physiological reasons: if due to emotional excitement, strenuous exercise, exercise before warming up insufficient reasons, it may be due to respiratory muscle spasm caused by forked air, there will be a sudden transient pain in the chest phenomenon, generally stop the activity, can be relieved after rest. 2. Pathological causes: angina pectoris, pericarditis, myocarditis and other cardiovascular diseases, because of the decline in cardiac function, resulting in sudden chest pain during activities; suffering from pneumonia, tuberculosis and other respiratory diseases, because of lung disease symptoms; reflux esophagitis, esophageal cancer and other digestive diseases will be stimulated by the esophagus to swallow food when the symptom occurs. If you suspect that the symptoms are pathologic, it is recommended that you go to the hospital in time.