提单是指用以证明海上货物已经由承运人接收或者装船，以及承运入保证据以交付货物的单证。拥有提单，在法律上就表明拥有其记载的货物。提单的持有人虽然不直接占有货物，但在目的港可凭提单请求承运入交付货物，或用背书或直接交付提单的方式处分货物；承运入也必须凭正本提 Bill of lading is used to prove that the goods have been accepted by the carrier or shipment, and shipped into the pledge to deliver the goods documents. Have a bill of lading, in the law that has its records of goods. Although the holder of the bill of lading does not directly occupy the goods, but at the port of destination can be requested by the bill of lading shipped into the delivery of goods, or by endorsement or direct delivery of the bill of lading way to dispose of goods;