In this paper I argue that the moral function of emotions in Xiu Shen Xi Xue presents the Aristotelian doctrine of non-rational part of soul listening to reason on the one hand, and the Mencius' doctrine of human nature essentially good on the other. But these two aspects may possibly have internal conflict. Further explanation is needed to make them compatible. So alongside with analyzing the text of Xiu Shen Xi Xue, I also try to explore of the possible interfusion of two different cultural tradition.