Abstract: On the one hand, the “double inference” rules proposed by scholars and “the general principles of civil law that scholars suggested” are analyzed. On the other hand, compared with the related legal system of Germany, France and Italy, the external system of Chinas marital debt system, the types of marital debt under the legal property system in China, the rules for the repayment of debts under the agreed property system are analyzed. It is wished that it can provide reference for the perfection of the marital debt problem in China and pave the way for marriage laws regression to corpus of civil law.

Key words: marital debt, double inference rule, daily family agency

摘要： 一方面针对学者提出的“双重推定规则”和《中华人民共和国民法典·民法总则专家建议稿》的观点进行分析，另一方面通过对比德、法、意大利三国的相关法律制度，分析我国夫妻债务制度的外部体系、法定财产制下夫妻债务的类型、约定财产制下债务偿还规则等方面的内容，以期为我国婚内夫妻债务问题的解决提供参考，为婚姻法回归民法典之路作铺垫。

关键词: 夫妻债务, 双重推定规则, 日常家事代理权