The purpose of this study is to develop class counseling activity teaching and assessment of board game integration, as well as to investigate the impact of board game teaching on interpersonal relationship in junior high school classes. To achieve the said research purpose, this study enrolled 30 students in a certain junior high school class in Kaohsiung City as the sample to conduct action research. The research instruments included junior high school student interpersonal relationship scale and course learning sheet. In addition, this study adopted data collection methods and document analysis methods to investigate the results. Moreover, this study used five board games, German Heart Attack, Outstanding Storyteller, Dwarf Pit, Truth Telling, and Spark, as the tools to implement a 10-week board game teaching unit. This study found that "German Heart Attack" board game teaching helped improve the development of good interpersonal interaction in students and peers; "Outstanding Storyteller" board game teaching helped students check their own status and role in a group; "Dwarf Pit" board game teaching urged students to seek assistance from others when encountering frustrations; "Truth Telling" board game teaching guided students to perceive the distress generated during interactions with people and propose solutions and strategies; "Spark" board game teaching helped students become aware of the self-confidence and sense of safety required in a group. Furthermore, the use of board game teaching helped improve interpersonal relationship in junior high school classes.