This paper presents a new research model to examine the factors influencing the quality of strategies developed and implementation in inter-organizational relationships in a green supply chain. In this study, we examine how attitude toward relationship orientation affects inter-organizational strategy quality, and how this association is affected by the opportunistic behavior and dysfunctional conflict. Relationship orientation, measured by relational benefits, relational proclivity, and connectedness, refers to the desire to develop and maintain relationships with green supply chain partners. Data are collected from 451 manufacturing firms that are among the top 1000 Taiwanese manufacturing firms of 2010 listed by Business Weekly. Relationship orientation, or the desire to develop and maintain relationships with collaborative partners, was found to be positively associated with the strategy quality. Our results show that opportunistic behavior and dysfunctional conflict decrease the willingness and damage efforts to establish relationships to enhance the strategy quality for the green supply chain