The adrenal glands are capable of secreting a number of important hormones and these hormones maintain the normal functioning of the body. The adrenal gland is an important endocrine organ in the human body, located above the kidneys on both sides. The adrenal gland can be divided into two parts, the cortex and the medulla, the cortex can secrete glucocorticoids, salinocorticoids, and a few sex hormones, etc., and the medulla can secrete catecholamine hormones. The above hormones can participate in the metabolic process of the human body and maintain the normal operation and function of the body; for example, glucocorticoids can regulate the growth, development, metabolism and immune function of the body; salicorticoids can maintain the water-electrolyte balance of the body; and sex hormones can promote the development of the sexual characteristics, maturation of the sex organs and maintenance of the sexual function and so on. When the adrenal glands function abnormally, diseases such as hypoadrenalism and hyperadrenalism may occur, resulting in a series of discomforts to the body. Patients who are suspected to have symptoms of adrenal-related diseases can go to the hospital for diagnosis and treatment as soon as possible under the guidance of the doctor.