The purpose of this study is to examine a moderated mediating effect of family communications on the relationship between family conflicts, family cohesion and family satisfaction in adolescents. A questionnaire on family conflicts, satisfaction, cohesion, and communications was distributed to 747 adolescents in middle and high schools. Data were analyzed using the SPSS PROCESS Macro. Results of the study indicate the following: First, there were significant gender differences in family conflicts, satisfaction, cohesion, and communications. Second, family conflicts have a negative effect on family satisfaction and negatively affect family satisfaction and lower family satisfaction through family cohesion for girls. Third, family communications perceived by the girls have a moderating effect on family cohesion through interaction with family conflicts. Fourth, family communications perceived by the girls influence family cohesion through interaction with conflicts, and as a result, influence family satisfaction. In conclusion, family communications of girls have moderated mediating effects on the process of family conflict and communications reaching family satisfaction. It implies that even if a conflict occurs, family cohesion and satisfaction are not lowered when family members can communicate openly. Limitations of the study and suggestions for counselors and educators are discussed.