The aim of this study is to explore the influences factors of health promoting workteam's collective efficacy of all elementary schools in Taiwan. The probability proportional sampling according various school sizes was used in this study to select faculty from all health promoting schools participated in 2007. 497 questionnaires were distributed in 26 selected schools and 468 questionnaires were returned with a response rate of 86.32%. Finally, 468 valid questionnaires were used in further analysis. The results have showed that input factors (individual factor, organizational factor, resources factor) indirectly related to collective efficacy through process factor (group interaction) and process factor directly related to collective efficacy. There were significant predictors for collective efficacy, accounting 67.3% variances. Only input factor were significant predictors for collective efficacy, accounting 52.8% variances. We hope the result can be the reference for schools to establish health polices and to develop action plan to cooperatively resolve the health problem.