Creative mindsets reflect the implicit beliefs individuals hold regarding the nature of creativity as innate (i.e., fixed mindset) or malleable (i.e., growth mindset). Karwowski (2014) developed the Creative Mindsets Scale (CMS), in which fixed and growth creative mindsets were each measured with five items. Across three studies, the current study aimed to examine its psychometric properties in Chinese settings and to explore to what extent effects of creative mindsets on creativity were generalized to the real workplace. Based on the survey data of 216 college students (Study 1) and 205 full-time employees (Study 2) in China, results consistently indicated that a two-factor structure, in which both types of creative mindsets were independent of each other, was confirmed. Measures of both types of creative mindsets were of satisfactory psychometric features in terms of reliability (internal consistency) and validity (construct, convergent, and discriminant validities). Furthermore, Study 1 provided evidence for the incremental validity of creative mindsets beyond mindsets of intelligence in explaining creative personal identity and creative self-efficacy. Based on a third independent sample consisting of 282 full-time employees from several Chinese companies, Study 3 further demonstrated that measures of creative mindsets could predict employees' creative performance as rated by their supervisors, lending additional support for their generalizability to the real workplace. Moreover, growth mindset, but not fixed mindset, was significantly related to creative performance, and such an effect was mediated by effort. The present study contributes to the creative mindset literature by cross-validating the CMS's psychometric properties in a new setting and empirically establishing the link between creative mindsets and employees' creativity in the real workplace.