The bona fide gains has been accepted and provided in many country s civil law,although the theory hasn t been establisher in our legal system,it has been applied in our country s justice practice.

Firstly,this paper introduces the goodwill of the origin and development,explores the effectiveness origin of bona fide;What smore,This paper analyses connotation definition of the good faith;Finally,this paper discusses upon the determination of bona fide from main body,objective,sub.

Derived from the principle of "hand muss hand wahren" in Germanic law,bona fide gaining has been successfully incorporated into civil laws of all the countries.

Analysis on the Good Faith Request of Directors Care Duty in the Limited Liability Company;

The phrase"good faith"means honestly believing some false information in one party.

Through the review on legislative evolution and judicial practice of the principle of bona fides,this article holds the view that this principle,which has been established widely in the civil law system,should be understood from tow aspects:judicial activity and good faith.

With the theorists research and discussion, this system is becoming more reasonable and perfect In our country, however, theorists pay more attention to this system s "acquisition" than "goodwill" which is the most essential and most crucial factor.

The bona-fide principle is the legalization of the business ethic with the core of "goodwill" and "balance of interest".

The "goodwill of the best of all places" is the spirit of the national capital and at the same time the special quality of Beijing culture.