Vasopressin, also known as anti-diuretic hormone, also known as arginine pressor hormone, is an endocrine hormone secreted by the hypothalamic supraoptic nucleus, belongs to the peptide hormone, is released through the hypothalamus through the pituitary gland and reaches the posterior lobe of the pituitary gland, also known as posterior pituitary hormone, which can play the role of increasing blood pressure, improving the permeability of the distal convoluted tubules and collecting ducts to water, and can play an anti-diuretic effect, so that it can raise blood pressure in the body. It is involved in the regulation of osmotic pressure in blood, blood volume, arterial pressure of body fluid circulation, as well as the state of injury and traumatic stress of nerve, body fluid and endocrine systems, etc. It can also regulate thyroid hormone, parathyroid hormone, glucocorticoid hormone and insulin, which together complete the stability and soundness of the endocrine axis system, and is an indispensable hormone in the body.