The patient was a 59-year-old elementary school teacher from Xiaoshan, Zhejiang Province, who had been suffering from carotid body aneurysm for 5 years and could not be operated when the tumor was first discovered because the local hospital was not equipped for the operation. However, the surgery failed to remove the tumor because of the rich blood supply and the carotid artery, and the unsuccessful medical search made Mr. Zhu lose his confidence in curing the disease. However, the tumor continued to grow, and last summer, the huge tumor began to compress the pharyngeal cavity, causing Ms. Zhu to have difficulty in breathing, so she was not only forced to leave her beloved podium and students, but also her life was under constant threat. It took more than 3 hours to remove the 7cm diameter carotid body aneurysm that had plagued Ms. Chu for many years. The carotid body aneurysm suffered by Mr. Zhu is a tumor that grows in the bifurcation of the common carotid artery and originates from the chemoreceptor cells in the paraganglia of the carotid body under the outer membrane of the artery. Although only a few of these tumors become malignant, a continuously enlarged tumor can compress the surrounding blood vessels, nerves, trachea and other important organs, causing insufficient blood supply to the brain and nerve palsy in mild cases, or stroke, respiratory distress and even death by asphyxiation in severe cases. At present, there is no other treatment for this disease except complete removal of the tumor, but it is not easy to remove a huge carotid body tumor. If the tumor is not cleared, the patient’s life will be in danger. If the tumor is cleared, damage to the nerves or blood vessels will cause hoarseness, tongue deviation, etc. The removal of giant carotid aneurysms is still one of the most challenging surgeries in vascular surgery because of the permanent neurological damage and even ischemic death. To solve this problem, both doctors and patients need to work together. For doctors, experienced doctors can minimize the risk of surgery with the help of meticulous preoperative preparation and mature and effective auxiliary techniques; for patients, it is advisable to operate as early as possible after the diagnosis of carotid body aneurysm, so as not to delay the time because the tumor is mostly benign and has no obvious symptoms in the early stage. Remember: the larger the carotid aneurysm, the greater the risk of surgery.