In recent years, with the change of work values, work is one of a way for people to pursue a happy life. Therefore, work fun is more and more valued. Nowadays, many enterprises gradually try to integrate work fun into work as a means of motivation or regulation , and find that work fun can stimulate the work impetus of employees, so as to improve work efficiency. Therefore, this study intends to explore how creativity and initiative of employees will affect their work fun, so as to influence perception of superior support, as well as the moderating effect of work passion. This study conducted a questionnaire survey on employees in Kunming, Yunnan province, and analysis of data showed that employee creativity and initiative can make employees more active at work, so as to feel the fun of work and obtain better work experience , and this kind of experience will make employees more feel superior support. In addition, the high work passion of employees can promote the employees with high level of creativity and initiative to feel work fun.