The limits of the selection of the subject of study. The survey selected in this article is for all Huatian CaterpillarCompany employees. According to the survey results, employees were told about the relationship between job satisfaction and performance, but we don't know if they are suitable for other companies of the same personality. Therefore, there are doubts about the general applicability of this study. However, given that the results of the study are some degree consistent. Therefore, it can be applied to companies of the same personality.