Conflict discourse is a common and complex linguistic phenomenon in daily communication.Based on the data collected from the conflict discourses of couples in daily life, this paper discusses the causes of the conflict discourses of couples by using Verschueren's adaptation theory . The conflict discourses of couples have both universality and independent characteristics.From the perspective of adaptation theory, the reason for the emergence of conflicted discourse is the absence of contextual factors in the communication of adaptation.Specifically, there is no adaptation to the other person's...