Drawing on leadership theory and team knowledge management theory, this paper studies the impact of team task conflict and relationship conflict on the innovation performance of knowledge workers, the mediating role of knowledge sharing and team leadership humility.The results indicates that, task conflict has an inverted U-shaped effect on innovation performance, team relationship conflict is negatively related to innovation performance; leader humility weakens the negative effects of relationship conflict and strengthens the positive effects of task conflict on knowledge sharing. This paper therefore suggests that team leaders should enhance the understanding and handling ability of team conflict management, and should attach importance to the knowledge sharing and the training of leadership humility.