The purposes of the study were to test the mediating role of leisure involvement and flow on the relationship between emotional contagion and leisure benefits in sports and leisure. The participants were college student in Taiwan selected by the purposive sampling method. Sports and Leisure Emotional Contagion Scale, Sports and Leisure Involvement Scale, Sports and leisure Flow Scale, and Sports and Leisure Benefits Scale, are used as instruments after compiled by authors, and retested using PLS-CFA. The CFA results showed that four scales have a good reliability and validity. The data were analyzed using PLS-SEM. Results of the study indicate that leisure involvement and flow had full mediating effects between emotional contagion and leisure benefits. The results could be applied in both sports and leisure area of mathematics instruction, and emotional contagion could elevate leisure benefits by leisure involvement and flow.