摘要： 信任在社会运行中发挥着突出的作用，它兼具理性和感性的成分，且关涉文化、道德、心理、生理等诸种因素，所以有关信任的研究体现出多学科和多角度的特色。按照不同的分类标准，信任可被划分为不同的类型，而法律信任属于重要的系统信任。另外，信任与法律分别可被视作实现社会整合、促进社会互动的非正式制度和正式制度，二者在抽象意义上有着频繁的互动。法律，尤其是私法，存在着一些以保护和促进信任为目的的具体制度，其中具有代表性的是英美法系的信义义务和大陆法系的诚实信用。前者可被看作一种行为标准，后者在大陆法系的法典中呈现为一般条款，对于此二者可以进行比较法上的研究。

关键词: 信任, 私法, 信义义务, 诚实信用, 法律信任

Abstract: Trust, consisting of both rational and emotional elements, plays a special role in the society, which is concerned with culture, morality, psychology and biology issues, and thus the research about trust embodies multidiscipline and multi-dimension.According to different standards, there are various classifications of trust.The trust of law can be defined as an important one of them Besides, from an abstract perspective, trust and law can be seen as formal and informal system respectively, to enhance the social integration and interaction, and they can work together well.In law, especially in private law, there are some mechanisms aiming at protecting trust, such as fiduciary duty in common law and bona fides in continental law.The former can be thought as a standard of conduct, while the latter is kind of blanket clause, and they can be studied via comparative way.

Key words: Trust, Private Law, Fiduciary Duty, Bona fides, Trust of Law