The safety belt position power, is an important system which in the law of insurance the history glorious and is characteristic, already accepted and becomes one of gradually generally marine insurance related business's core systems for immediately various countries' insurance legislation and the judicial system institute. The rights and interests transfer book said that “a generation of position asks to recompense the certificate”, is stipulated that the insured obtains the insurance payment, and shifts correspondingly it to the third person of seek redress's right to insurer's written certificate. the theorists about the rights and interests transfer book's nature and the function existence very great dispute, some scholars thought that should write up the rights and interests transfer book achievement to exercise a generation of position to ask to recompense the power the basis, but this viewpoint and our country use certainly the generation of position principle contradictory. In the paper, the author application “the comparison analytic method”, contrasted China and UK to ask in the marine safety belt position to recompense the power stipulation aspect the difference. Simultaneously applies “the case analytic method”, enumerated three to have the representative case, the exposition rights and interests transfer book nature and the function. the author believed that when involves to our country this has in the dispute question regarding the rights and interests transfer book use's rationality and the necessity, should pay attention distinguishes clearly the rights and interests transfer book and the safety belt position asks to recompense between the power the relations: When the rights and interests transfer book and the safety belt position asks recompenses the power closely coincide, the rights and interests transfer book cannot rise together simultaneously the function, should order the Insurance company to stop using the rights and interests to transfer the book; But when the insurer has not obtained a generation of position to ask to recompense the power, or only obtains a part generation of position to ask to recompense temporary, this time signs the corresponding rights and interests transfer book is the necessary action.