Endocrine refers to the physiological regulation of the human body by the endocrine system, which mainly consists of the endocrine organs that exist independently of each other in terms of morphology and structure, and the endocrine tissues that are scattered endocrine cell clusters in other organs and tissues, and are involved in realizing the stabilization of the internal environment of the organism. Endocrine organs mainly include the pituitary gland, thyroid gland, parathyroid gland, adrenal gland, etc., which are involved in the secretion of various hormones. Endocrine tissues include pancreatic islets in the pancreas, interstitial cells in the testes, and follicular cells and corpus luteum cells in the ovaries, which are involved in many normal physiological activities of the body. The endocrine system is involved in the physiological regulation of the body through the secretion of various hormones. When abnormalities occur, one should consult an endocrinologist promptly.