The purpose of this study is to identify the influencing relationship among team learning behavior, critical reflective work behavior and group creativity and to validate the mediating effect of critical reflective work behavior. 277 employees who were working at public organizations were selected for the survey and used SPSS 20.0 an AMOS 20.0. to analyze the data. The following is the result of the study: First, team learning behavior has a positive effect on both critical reflective work behavior and group creativity. It suggests thats the higher the team learning behavior level is, the more group creativity is likely to be shown and better critical reflective work behavior is also exercised. Critical reflective work behavior also has a positive influence on group creativity. In other words, the higher critical work behavior level is, the higher group creativity shows. Second, the study has verified that critical reflective work behavior serves as partial mediation role in the influencing relationship between team learning behavior and group creativity, which means team learning behavior has a direct effect on group creativity and an indirect effect by critical reflective work behavior. In other words, the more active team learning behavior and critical reflective work behavior are in an organization, the higher group creativity is shown. The study suggests that group creativity in public organizations can be enhanced by encouraging team members to interactively engage in learning with others and, especially by facilitating critical reflective behaviors among team members. Since public organizations are considered to have strong hieratical culture, constructing work environment that supports team members to critically reflect on their work behavior and openly share feedbacks and ideas with one another will improve group creativity and organizations’ overall performance as well.