From the 1990s,tourism festival becomes one of the important carriers of tourism development. Especially for the national regions which are full of traditional festival resources, they are all the more so. And among them, the Multinational Autonomous County of Longlin is typical. On the basis of analyzing the conditions of holding national tourism festivals in Multinational Autonomous County of Longlin in Guangxi and then I elaborate the significance of holding it.Meanwhile,I treatise the problems during the development. In the end, according to the theory of modern tourism planning and marketing, I put forward the suggestions and measures of reforming the tourism festivals in Multinational Autonomous County of Longlin.