Occasional pain in the chest may be caused by intercostal neuralgia, angina, stomach cramps. 1. Intercostal neuralgia: the pain in the chest caused by viral infection, thoracic spine injury and other factors is distributed in the form of strips, which can be manifested as paroxysmal pain, and the pain is mostly stabbing pain. 2. Angina: middle-aged and old people with hypertension and hyperlipidemia who experience occasional chest pain during activities should consider stable angina caused by insufficient coronary blood supply. 3. Stomach cramps: If the chest pain occurs occasionally after eating too cold or too hot food, it is mostly considered to be caused by stomach cramps, accompanied by burping, acid reflux and other symptoms. Occasional chest pain can also be seen in other causes, it is recommended that patients seek medical attention in time to avoid delaying the condition.