Objective To explore the key antecedent variables of team effectiveness and their correlation.Methods The stratified cluster random sampling was conducted to recruit 133 college students from a university in Fujian Province.Results (1) Communication and back up behaviors were positive predictors of team grade (β =0.645,0.315,P＜0.01)and satisfaction degree of team members (β=0.305,0.309,P＜0.01).Free riding had negative influence to the satisfaction of team members (β=-0.392,P＜0.01).(2)Accuracy of tusk cognition and tusk concern were positively related to team performance (β=0.513,0.470,P＜0.01),and accuracy of tusk cognition and team efficacy were predictors of satisfaction of team members (β=0.502,0.373,P＜0.01).(3)Team process variables mediated the relationship between team mentalmodel and tear effectiveness.Conclusion Antecedent variables include team process variables and team mental model.Between team mental model and team effectiveness,the team process variables play a mediating role.