Chest pain after splitting is considered to be related to pneumothorax, coronary heart disease and neuropathic pain. 1. Pneumothorax: commonly found in young and middle-aged people, if there is chest pain like pins and needles after splitting, or at the same time accompanied by progressive dyspnea, pneumothorax should be considered possible. 2. Coronary heart disease: If there is a basic disease of coronary heart disease, the heart pumps more blood during the splitting exercise, but the coronary artery blood supply is insufficient to reduce the oxygen supply to the heart angina pectoris will occur, chest pain. 3. Neurogenic pain: chest pain after splitting may also be caused by pleurisy or intercostal neuralgia, thoracic spine hyperplasia, thoracic disc herniation, etc., and neurogenic pain can be caused after the chest is pulled. Chest pain after splitting may also be related to other reasons, it is recommended to consult a doctor in time to identify the cause of the disease, and standardized treatment under the guidance of the doctor.