Abstract: The effect of team shared mental model on team effectiveness in high - tech organizations is empirically explored. The data collected from 248 team members in 36 high-tech organizations of 4 cities show that the team shared mental model has a significant impact on the team performance and team members’ satisfaction. Team shared mental model has an impact on the team performance through knowledge sharing behavior among team members, that is, knowledge sharing behavior partially mediates between team shared mental model and team performance.