Hormones that affect the secretion of the nervous system include the following: 1. growth hormone, which is secreted and stored by pituitary cells to stimulate the growth of joint cartilage and bones and plays a key role in children’s growth and development. 2. thyroid hormone, which is secreted by the thyroid gland to promote the development of bones, brain and genitalia, can cause dullness when its secretion is reduced. 3. Adrenaline, a hormone and neurotransmitter, can make blood vessels contract and heart contraction rise to maintain the excitability of the human nervous system. 4. Glucocorticoids, which have certain regulatory effects on the body’s development, growth, metabolism and immune function. It also has the role of regulating sugar, fat and protein substances, and when secretion is reduced, it can cause low immune function, etc.