關鍵詞：2010台北國際花卉博覽會、志願服務、志工、參與動機、志工經驗 Abstract： This research aims at exploring participate motivation of volunteers in Taipei International Flower Expo in 2010 and different motivations in every age of volunteers. On the other hand, this paper tries to discover the different types of participating experiences of volunteers. This research took Taipei International Flower Expo in 2010 as case study. It conducted interviews with 16 volunteers in Flower Expo. The result shows that motivation of volunteers for mega events was mainly not their altruistic attitude, but lying on making friend and self-empowerment. It could be expected that Taiwan will hold more and more mega-events in the coming years. Therefore, the non-altruistic type of volunteers might be gaining more influence in the future.