票据保证是指票据债务人以外的第三人以担保特定票据债务人改造票据债务为目的而在票据上所为的附属票据行为。与担保法上保证制度类似 ,票据保证制度是担保主债务履行的从债务 ,因主债务的消灭而消灭 ,但由于在实践中由于票据保证是一种附属票据行为 ,故其制度呈现鲜明特点。? Notes promissory note refers to a third party other than the promissory notes of the promissory notes owned by the promissory notes of the promissory notes issued by the promissory note obligor. Similar to the guarantee law guarantee system, the note guarantee system is the slave debt that guarantees the fulfillment of the principal debt and is extinguished by the elimination of the principal debt. However, in practice, the promissory note of the promissory note system is a peculiar feature of the promissory note system. ?