一、引言我国海商法界对于“提单是物权凭证”的提法已很普及,但这并不表明人们对此概念的完全认同,也不表明人们对物权凭证的内涵有相同的理解。由这一提法引发的对提单性质的讨论也一直是学界关注的焦点。许多学者曾先后对之做过探讨和剖析,陆续提出了所有权凭证说、物权凭证说、占有权凭证说、债权凭证说等观点;而对于贸易中的支付环节有人则提出了抵押权凭证说、质权 First, the introduction of China’s maritime law circles for the “bill of lading is a document of title” has been very popular, but this does not mean that people fully agree with this concept, nor does it mean that people have the same content of the certificate of title understanding. The discussion on the nature of bills of lading triggered by this formulation has also been the focus of academia. Many scholars have done some research and analysis on it successively and put forward the viewpoints of ownership certificate, property voucher, possession voucher, claim certificate and so on. Someone in the payment section of trade proposed the voucher of mortgage , Pledge