The system of legal mortgage was originated from Roman law, and separated into three legislation styles namely the German, Japanese and Swiss style based on different social context and knowledge pedigree.

• 法定抵押权制度源于古罗马法,在近现代民法法典化的过程中,由于社会背景和知识谱系的差异,分化为以德国、本和瑞士为代表的三种立法体例。