On vital gate, documented different opinions, there are prostate theory, gonads theory , brain theory, the sinus node theory， adrenal theory， the control system theory， the endocrine system theory, the vital and kidney one theory，the innate instinct vigor hypothesis, the world and yin and yang of the human body bipolar hypothesis，and so on. In this paper, regardless of anatomical localization, physiological functions and pathological features, vital gate and the adrenal surprisingly similar, so we speculated that adrenal may be known as the vital gate.