Adenopituitary eosinophil secretion means that eosinophils are capable of secreting hormones, and the cells are categorized according to the hormones they secrete. Secreted hormones, such as growth hormone, are secreted by growth hormone cells, and secretion of prolactin is by lactotrophic hormone cells. In addition, there are basophilic cells. Basophilic cells mainly secrete adrenocorticotropic hormone, thyroid stimulating hormone, and gonadotropin, so the cells are categorized according to the different hormones they secrete. Eosinophils are mainly found in the parathyroid glands, accounting for about 40% of the total number of cells in the distal glands, and are called eosinophilic cells because they contain eosinophilic granules in the cytoplasm. When eosinophilic cells are abnormally proliferating, the hormones secreted are abnormally increased, which causes corresponding abnormal changes and requires early treatment.