The establishment of the trust protection principle results from the integration of democracy and the rule of law,marks the transformation of the formal rule of law into a substantive one,and is the inevitable requirement of building a government of credibility and under the rule of law.

The trust protection principle originated in Germany, through several decades development, it has become an important principle of administrative law in many countries.

Research on Trust-Protection Principles of Administration-Permission Law;

The principle of trust-protection has been the first time established in the administrative licensing law of our country.

As a general administration principle, Trust and Protection Principle has been attached more and more importance to gradually and introduced to legislation in many countries.

It is a comparative vague problem between the principle of protection of reliability and the principle of good faith.

The principle of protection of reliability gradually grew up a basic principle of administrative law from Federal Republic of Germany, which is already obtained explicit acknowledge in many countries and districts in the world by imitation、inheritance and development such as Japan and Taiwan and so on.