在债法中,作为债的内容的债务,就其本质,是债务人负担不利益。而根据不同债务的不同特点,形成了巨大的债务群。其中附随义务与从给付义务是比较难区分的两种不同的债务。本文将对二者的特点、发生原因、法律后果等方面进行比较与分析,从而能够在具体履行债务的时候更好地引导债务人和债权人。 In the law of debt, the debt that is the content of the debt, by its very nature, is borne by the debtor with no interest. According to the different characteristics of different debt, a huge debt group has formed. Among them, the accompanying obligations and the obligations of payment are more difficult to distinguish between the two different types of debt. This article will compare and analyze the characteristics, causes and legal consequences of the two in order to guide the debtors and creditors better when they fulfill their obligations.