This study aims to examine the mediating effects of positive psychological capital on the fear of positive evaluation and speech anxiety in college students. My major findings are as follows: When college students have higher fears regarding positive evaluation, they typically have lower levels of positive psychological capital and higher speech anxiety. who have higher levels of positive psychological capital also tend to have lower levels of speech anxiety Second, positive psychological capital partly mediates the relationship between the fear of positive evaluation and speech anxiety. Evidence has shown that sub variables of positive psychological capital (such as self-efficiency, optimism, hope, and resilience) partly mediates the relationship between the fear of positive evaluation and speech anxiety. In summary, although the fear of positive evaluation as an independent variable can affect levels of speech anxiety, the amount of this impact tends to be reduced when self-efficiency, optimism, hope, and resilience variables are mediated. Therefore, the partial mediation has the effect of building positive psychological capital.