Advanced B/L and anti-dated B/L are one typical kind of maritime frauds that often occur in marine business. In recent years, such cases have taken place so often that they severely disturbed normal ocean-transportation economic order in the business practice. According to our law, only when the goods have been loaded on board，shall the carrier issue an 'on board” bill of lading---which is the carrier's legal duty required by the international conventions, international usual practices and laws. But sometimes the carrier don’t obey the law and issues an advanced B/L or anti-dated B/L against the law.
So how to prevent advanced B/L and anti-dated B/L has become a big issue we should face. This thesis can be divided into four parts. The first part is the introduction of basic theory of advanced B/L and anti-dated B/L. The author presents the definitions and analyzes the differences between them. In the second part, the author analyzes the legal nature of the advanced B/L and anti-dated B/L. The third part states the existing reasons and harms causing in reality. At last the author puts forward precaution strategies on the advanced B/L and anti-dated B/L.
【Key Words】Advanced B/L ; Antedated B/L; Fraud of B/L
