Based on the leader-member exchange theory and the social comparison theory， it empirically studied the relationship between leader-member exchange differentiation and knowledge-sharing behavior in teams. In addition， it examined the mediating effect of status conflict and moderating effect of justice climate. Using 468 employee sample data from 122 teams， the empirical results show that leader-member exchange differentiation positively affects team members' status conflict， which leads to a reduction in knowledge-sharing behavior among team members. The team justice climate moderates the positive influence of leader-member exchange differentiation on team status conflict， as well as the mediating role of status conflict in the influence of leader-member exchange differentiation on knowledge sharing behavior. The results expand the leader-member exchange theory from the perspective and framework of team level， and remind organizational managers to create a justice atmosphere in the team， and prevent or elminate the potential damage of leader-member exchange differentiation and status conflicts.