Abstract: In the acute phase of traumatic brain injury or cerebrovascular disease,disorders of hypothalamic-pituitary-cortical axis,hypothalamic-pituitary-thyroid axis and hypothalamic-pituitary-gonad axis may exist.The main cause is primary or secondary impairment of hypothalamus as well as pituitary after brain injury.Most of the variations of endocrine after acute brain injuries may be temporary and reversible,but some patients will accompany with hypopituitarism or neuroendocrine deficiency.It is important to set a guideline to decide who and when to test.Hormone replacement therapy should also be verified if it can improve the outcome of patients with brain injuries.

Key words: brain injury, endocrine, pituitary, hormone, review