Abstract: By using the individual psychological capital as the inhibitor factor of the turnover intention and the dependent variable of the emotional labor, exploration was made into the direct effect of the psychological capital on the emotional labor and turnover intention, and the intermediary effect of the emotional labor upon the relation between the psychological capital and the turnover intention. A random sampling of the sales staff from different places as our research subjects, 350 questionnaires were handed out and 314 of them are valid ones. The research adopts the revised psychological capital scale, the emotional labor scale, and the turnover intention scale as our principal research tool. Our findings show that the psychological capital has a significantly negative effect upon the turnover intention and it exerts a significantly negative effect upon the surface acting in the emotional labor yet has a significantly positive effect on the depth acting and natural performance, indicating that the direct effect of the psychological capital upon the turnover intention is far greater than the intermediary effect of the emotional labor upon the psychological capital and the turnover intention.