Using Temporal Distribution Subscale of the Time Personality Questionnaire, this study selected 58 polychronic and monochronic participants out of 551 individuals to take part in the experiment. This study investigated whether executive function differ between this two types of temporal distribution individuals while task switching. Meanwhile, through positive, neutral and negative affective priming, this paper also focused on the effect of emotion on task switching. The results showed that polychromic participants’ respond time of task switching was significantly shorter than monochronic participants’ (F = 24.370, p < 0.001). The main effect of emotion was significant (F = 5.215, p < 0.01), and monochronic participants’ respond time in positive emotion was significantly shorter than in neutral and negative emotion. But there were no significant differences between task-switch and task-repeat. According to the results, polychromic individuals perform better in task switching, in addition, positive emotions can promote polychromic individuals’ task switching.