This study conducted survey on college students leisure activities and examined the structural relationships among their involvement in leisure activities, leisure attitudes, and future pursuit of leisure participation. This study verified the relationships by categorizing leisure activities into two groups: serious leisure and casual leisure. It was found that each factor of involvement in leisure activities generally has a positive influence on each factor of leisure attitudes, except that the centrality of casual leisure does not influence on the formation of behavioral attitudes. On the contrary, serious leisure has less influence than casual leisure in terms of the influence of factors of involvement in leisure activities on the factors of leisure attitudes. In addition, serious leisure has less influence than casual leisure on future pursuit of leisure participation. To sum up, the relationships among college students involvement in leisure activities, their leisure attitudes, and future pursuit of leisure participation were less strong for serious leisure than casual Leisure.