Nowadays, the research on the effect of emotion on rational person behavior is a problem of concern in the field of desicion science, and it is a forward direction to carry out the relevant research using the method of decision neuroscience. In this paper, we use the method of meta-analysis to analyze 30 effect values which were extracted from 19 literatures. The result shows that emotion has a significant influence on rational person behavior. At the same time, we exploratory find that emotional valence has a significant positive effect on the relationship between the two. Positive emotions can lead rational person to take risk seeking behavior in risk decision making or cooperative behavior in social decision making; Negative emotions can lead rational person to take risk-averse behavior in risk decision making or non cooperative behavior in social decisions. The influence of positive or negative emotions on rational person behavior are reflected in the amplitude differences of brain electrical components such as P2, P3, N2, ERN, MFN and FRN, but there is no consistent conclusion of amplitude change direction for various brain electrical components. This result gives the relationship between emotion and rational person behavior, and puts forward the direction of future research.