Museumshavemore and more functions now, become to role of knowledge promotion from role of collection, museums begin to attract citizens to participate through different ways, turn intoa space of leisure and entertainment. This study was aimed at active process and content of National Taiwan Museum with observation, expectto explore leisure promotion of National Taiwan Museum in participant observation, and usingthefiveelements of the system of functional tourismthat Gunn proposedfrom the supply sideof tourism,to know the possibilityof leisure promotion of museum in the future. After analysis, obtain some conclusions such as strengthening links with the surrounding landscape、Providingcomprehensive and in-depth explanation、strengthening promotions, to provide some reference and improvement of related researchin the future.