"The present study aimed to show how forgiveness can play a role between the adolescents’ experience of family violence and posttraumatic stress. It was conducted to measure the experience of family violence, posttraumatic stress, and forgiveness of students from 512(232 male, 280 female) middle and high school students. Specifically, it was intended to show whether forgiveness for parents can ease off posttraumatic stress induced from family violence. The major results are as follows: Adolescents’ forgiveness for parents plays a role as a buffer between the experience of family violence and their posttraumatic stress. Although forgiveness didn't take buffer role between the experience of physical violence and posttraumatic stress, but it did between the experience of psychological violence and posttraumatic stress. Among the three types of forgiveness, only cognitive forgiveness take a buffer role between the experience of violence and posttraumatic stress. Meanwhile emotional and behavioral forgiveness didn't take a any role between them."