The “XuanLan”thought of Lao Tzu is an irrational thought that beyond the rational logic, and is the highest cognition method of human. Lao Tzu needs “XuanLan” when he referring to the “Tao”, and it is the philosophical method of “as the Tao”.“Xuan Lan” is a state of mind, and it is necessary to use the intuition “understanding” to open and to grasp through rational“mindfulness”, then, the state that detached and transcendental ego can be achieved.%老子的“玄览”思想是一种超越理性逻辑的非理性思想，是人类最高的认识方法。老子“为道”需要“玄览”，“玄览”是“为道”的哲学方法。“玄览”是一种心境，需要用“直觉”悟性去开启，通过理性“静观”来把握，从而达到超然物外与超然自我的“玄同”境界。
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