Based on the new economy condition, Team Leadership and Team Psychological Safety have been concerned greatly by both academicians and professionals. The existing literature of Team Leadership has been focused on its direct impact on organization, but lack of the study on mechanism and path. In this paper, using 142 teams as sample, we select trust and team psychological safety as two psychological variables and analyze whether and how the transformational leadership impact on team psychological safety through trust. The results show that both team leadership and trust have significant positive impact on team psychological safety, further analysis shows that trust has significantly moderate impact between Team Leadership and team psychological safety. It means that team leadership doesn’t only influence on team psychological safety, but also to a great extent through the intermediary role of trust to impact on.