建设工程分包合同中的背靠背条款,通常是指总承包人在分包合同中约定,以业主付款作为其向分包人支付相应款项为前提条件的条款。若业主未付款,总承包人即以该条款抗辩分包人的付款请求权。但分包合同背靠背条款从成立有效到援引生效,均存在诸多法律争议,为保障总承包人与分包人共同分担业主支付工程款风险的效果,达到总承包人援引背靠背条款抗辩并得到裁判支持的目的,本文在分析背靠背条款的有效及生效争议及要件的基础上,对总承包人援引分包合同 Back-to-back clauses in construction subcontracts generally refer to the terms stipulated by the general contractor in the subcontract and preconditions that the owner pays as the corresponding payment to the subcontractors. If the owner does not pay, the general contractor defends the subcontractor’s claim for payment with the clause. However, back-to-back subcontract back-to-back provisions from the establishment of effective to cite the entry into force, there are many legal disputes, in order to protect the general contractor and subcontractors to share the risk of the owner to pay the project risk effect, the general contractor to invoke back-to- On the basis of analyzing the valid and effective disputes and requirements of the back-to-back clause, this article invokes the subcontractor