The purpose of this study was to examine the team cohesion and coaches' leadership behavior on badminton players above high school levels using Data were collected through the use of a self-designed demographic information questionnaire. The research subjects of this study were players who participated in the first national ranking badminton tournament in 2012. The data was analyzed by descriptive statistics, independent sample t-test, One-way ANOVA and Scheffe's method. Major research findings are as the following: 1. There were significant differences (p＜.05) on perception of coaches' leadership behaviors in female players than male players, but no significant differences in genders on perception of team cohesion. 2. In coaches' leadership behavior: there were no significant differences in different years of training on five dimensions: training and instruction, caring, positive feedback, democratic behavior and negotiating behavior. In team cohesion: there were much more aware of players train for more than 6 years on four dimensions: well-rounded interpersonal skills, team work, team adaptation and interpersonal attraction. 3. There were significant differences in perception of coaches' leadership behavior and team cohesion on players participating in different categories. There were much more aware of college players than other players in perception of coaches' leadership behavior and team cohesion but no significant differences on the dimensions of coaches' leadership behavior and team cohesion 4. There were no significant differences in perception of coaches' leadership behavior and team cohesion on players with different sport achievement performance. 5. There were no significant differences (p＜.05) in perception of coaches' leadership behavior and team cohesion on player's days of practice per week.