ABSTRACT Rule by law-rization be to extend all over the times large bell in each corners of the present age of globalization "times world. Chinese society finally starts road of treading staunchly to rule by law-rization course in several after circuitous". Manage state affairs according to law and "perform official duties according to law "already becoming civilized common view and times of what our gets along times whole nation in the nowadays most ictus, but administration the vigour sum is have most expand the sex authority , have a little of most incautious in being public authority of the present age , only is capable to do evolution for one Jie refuses to yield to take off the bridle savage horse , hackneyed Shi not taming excessively. I believe are going to want to have reasonableness too according to "law" perform official duties according to law not only. "Rational administration " responds to be the present age perform official duties according to law the principle intention of having necessarily. Entire bearing strengthens and proposes supervisory control to supervise government administration behavior "administration rationality and administration legitimacy "principle doubleness and follow reason to appear extremely necessary and important right away. Key word：Rationality principle legitimacy principle liberty cuts amounts essence justice
