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 interorganizational 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.