After reviewing the literatures of how emotion affects creativity, this paper firstly summarizes the main research findings. Then it analyses the three functions of affecting the working memory, information handling style and individual’s working input. These three functions give emotion the chance to affect the creativity, in detail, through the cognitive path and motivational path. It further argues that it is necessary to exploit the feature of the emotion and deepen the motivational path between emotion and creativity and take the workplace emotional events theory into consideration to limit the antecedent varieties of the emotion. It also gives the future research thoughts.