When hidden guaranty endorsement composes turning round endorsement in form, the endorsee can ask the successor as endorser to undertake the bill duty for the cause of existing guaranty relation.

隐存保证背书在形式上构成回头背书时，被背书人得以存在保证关系为由，要求其作为背书人时的后手承担票据责任。

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Hidden guaranty endorsement usually does not have true relation of business between creditor and debtor, but endorser cannot refuse to undertake the bill duty.

隐存保证背书通常没有真实的交易关系和债权债务关系，但背书人不得因此拒绝承担票据责任。

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