Parent-child interaction therapy is a parent-mediated therapy approach that focuses on solving internalization-externalization problems observed in children aged 2-7. The approach based on parenting styles, attachment theory, behavioral theory, and social learning theories aims to teach play therapy skills to parents. In this direction, each stage was organized as teaching and coaching sessions in an approach that included two phases: a child-directed interaction phase and parent-directed interaction. The first stage, which is the child-directed stage, it is aimed to developing a sincere and warm relationship between the parent and the child by following the child's lead.. In the second phase, the parent-directed interaction phase, effective discipline methods are taught to parents and coached at the point of use, depending on the goal of increasing their child's adaptation skills. Therapy is not time-limited and is performance-oriented. In this study, the general characteristics of parent-child interaction therapy, its historical development, theoretical foundations, the structure of therapy sessions, the intervention process, and parent-child interaction therapy research are included. As a result of the review, depending on the international literature, can be said to be parent-child interaction therapy is an early-term, parent-oriented and evidence-based approach that is effective on early childhood compliance and behavior problems, including children with neurodevelopmental problems, parenting stress, parental efficacy perception, and family harmony.