The formation of thrombotic foreign bodies in the human venous system or the right atrium and ventricle system, ultimately leading to the blockage in the pulmonary artery, is referred to as pulmonary embolism. After the onset of pulmonary embolism, patients may experience symptoms such as shortness of breath, chest pain, coughing, and even coughing up blood. It is crucial to immediately conduct a pulmonary artery CTA scan for further diagnosis. If the diagnosis of pulmonary embolism is confirmed, thrombolytic or interventional treatments can be considered.