Headache and chest tightness can be caused by lung lesions or heart disease. Pulmonary lesions are commonly seen in patients with pulmonary embolism, which mainly causes headache attacks due to lack of oxygen to the brain after pulmonary embolism, and can also cause chest tightness and chest pain, and may even cause respiratory failure leading to death. If the patient is considered to be caused by heart disease, it is mostly seen in coronary artery disease, with anterior heart pain and discomfort, mainly manifested as pressure-like pain lasting for 3-5 minutes in most cases. If the symptoms last for more than 5 minutes, it may become a myocardial infarction, and the diagnosis should be clarified by electrocardiogram, triple infarction, coronary CTA or cardiac angiography if necessary.