Adrenal tumors are classified into benign and malignant tumors according to their nature; non-functional and functional tumors according to the presence or absence of endocrine function; cortical tumors, medullary tumors, mesenchymal tumors or metastases according to the site of occurrence. Malignant tumors may endanger life and health, and the danger is still relatively serious. Even benign tumors may have some endocrine effects. Although the adrenal glands are small, they bear important life activities of human body, such as protein metabolism and sugar metabolism, etc. If the adrenal gland function is impaired, human body may show high blood pressure and low blood potassium. The early symptoms of adrenal adenoma are related to the location of tumor cells, and there are many symptoms, including cortisolism, aldosteronism, abnormal adrenal sex signs, elevated blood pressure and changes in basal metabolism. The harm of adrenal tumor can be divided into the following two aspects according to the different hormones secreted abnormally: 1. primary aldosteronism: clinically, it is characterized by hypertension and hypokalemia, and hypokalemia can cause cardiac arrhythmia and even cardiac arrest; 2. pheochromocytoma: clinically, it mainly manifests as patients’ sudden increase in blood pressure, heart rhythm disturbance, and even serious life-threatening complications such as cerebral hemorrhage. Patients with adrenal tumor should strive to remove the tumor as much as possible. The prognosis is good for benign tumor after surgical removal; malignant tumor can relieve symptoms, improve quality of life and prolong survival after surgical removal.