Based on the theory of relationship marketing and marketing channel behavior, this paper empirically tests the interplay mechanism among manufacturers’ relationship marketing orientation(RMO), interpersonal guanxi(IPG) and interorganizational relationship(IOR) and their effects on relationship governance(RG) in China Marketing channel. It comes to the following conclusions: manufacturers’ RMO has no direct positive effect on joint planning, but has an indirect positive effect on joint solving problems through IPG and IOR; RMO has significant impact on IPG and IORs, while IPR plays a mediator role between RMO and IOR; IPG and IOR has effect on RG, while IPG plays a mediator role between IOR and RG, and they have significant positive effect on Joint solving problem but no effects on joint planging; RG can not restrain the opportunist behavior.