If the patient has paroxysmal pain in the middle of the chest: 1, consider the factors of trauma, such as a fracture of the sternum or ribs or clavicle, and a contusion or stretching injury of the surrounding soft tissues after the fracture. 2, if the paroxysmal pain in the middle of the chest gradually worsens, does not gradually relieve with time, and is severe with tearing-like pain and unbearable pain, consider the high-risk chest pain, often in 3.For middle chest pain paroxysms that change gradually with breathing, consider pleurisy, pleural effusion, and massive lung infection at this time. 4.If the middle chest pain symptoms are relatively mild and have a clear distribution around the ribs, consider intercostal neuralgia, herpes zoster, and other conditions.