Chest pain is not necessarily cancer. It should be judged based on the location, nature, duration and accompanying symptoms of the pain. If the pain is relatively fixed, with persistent swelling or stabbing pain, accompanied by symptoms such as coughing and hemoptysis, it may be chest pain caused by lung cancer. This is because the tumor in the lung will stimulate the pleura or metastasis such as sternum or ribs will occur, causing obvious chest pain. This kind of pain caused by cancer is called cancer pain, which is usually clearly located, persistent pain, and difficult to be relieved by common painkillers. Some patients with chest pain have difficulty in specifying the exact location and have sudden left anterior chest crushing pain, accompanied by symptoms such as panic, shortness of breath and cold sweat, which lasts for a short time and can be relieved by themselves. This kind of chest pain is usually angina pectoris, which is seen in patients with coronary heart disease. There are also some chest pains that may be caused by diseases such as rib fracture and pleurisy, and the nature of the pain is different. In conclusion, cancer can cause chest pain, but more common is chest pain caused by cardiovascular diseases such as angina pectoris and myocardial infarction.