During the early developmental period of central nerves system, glucocorticoid can influence the activity of hypothalamic-pituitary-adrenocortical axis via glucocorticoid receptors, and modulate the process of neural survival, outgrowth and programming death process; In adult, glucocorticoid can regulate the expression of the factors which correlate with the plasticity of neurons; In aged individual, glucocorticoid can be harmful to nerves under most conditions. Therefore, glucocorticoid plays an important role in the development of neural system.