This study focused on perceived relationship conflict and task conflict within groups and investigated the possible misperceptions and differences in preferences of conflict management behavior. Both types of conflict were manipulated in a crossed design with respect to their conflict level, resulting in four different scenarios (i.e., low conflict, relationship conflict, task conflict, and mixed conflict situations). Two hundred and thirty-one undergraduate students were asked to answer (1) perceived task and relationship conflict within each scenario and (2) preferred management behavior in that situation. Results showed that both types of conflict could be misperceived with regard to the other. Avoidant management behavior was preferred more in the relationship conflict situation than the task conflict situation. In addition, preferred management behavior in the mixed conflict situation, where both relationship and task conflict were strongly perceived, was the same as the management behavior in the relationship conflict situation. Differences in management behavior in each conflict situation were discussed based on the dual process theory.