Pheochromocytoma refers to a tumor of endochromatic tissue that occurs in the glandular medulla and sympathetic and parasympathetic nerves of the human kidney. The tumor secretes large amounts of epinephrine and norepinephrine, which in turn can cause increased blood pressure or persistent, paroxysmal symptoms of metabolic disorders in various tissues and organs. Most patients can be cured by early detection and treatment. However, advanced disease is more aggressive and rapidly changing, making treatment more difficult. In particular, malignant pheochromocytoma is more difficult to treat. In recent years, due to the improvement of disease awareness and diagnostic techniques, the number of cases detected at an early stage has gradually increased clinically, with a slightly higher incidence in males than females, and is more common in 2-5 years old. Therefore, the appearance of pheochromocytoma should be treated in hospital, and early treatment can achieve better results.