善意取得制度中的“善意”是指对特定物权事实的不知,是一种主观不知的事实判断,而有无过失则是对第三人信赖的合理性判断。文章首先介绍了善意的起源、发展,探析了“善意”保护的效力渊源;进而分析了“善意”的内涵界定;最后从主体、主观、客观、时间四个方面论述了“善意”的认定标准。 The “goodwill” in the system of goodwill refers to the ignorance of the fact of a specific property right, a factual judgment of subjective ignorance, and the judgment of the reasonableness of the trust of a third person with or without negligence. The article first introduces the origin and development of goodwill, analyzes the origin of validity of the protection of “goodwill”, and then analyzes the connotation of “goodwill ”. Finally, this paper discusses the four aspects of the subject, subjective, objective and time. Goodwill "of the accreditation standards.