Under the influence of postmodernism, the middle class are trying to extricate themselves through the choice of mobility from the dilemma of modernity. Lifestyle migration is an exploration and practice of modern people's yearning for ''a better life''. Now, there are many debates on the definition of lifestyle migration, hence this study takes Dali's lifestyle migrants as the case object, and uses the methods of in-depth interview, participatory observation, subject coding, and hermeneutic analysis to explore the connotation of ''lifestyle''. It is found that lifestyle is a multi-level and multi-dimensional conceptual system. For the reason of ''changing their lifestyle'', people migrate from cities to Dali with transforming the life objectives, reconstructing the activity orders, and changing the interpersonal ways. First, new migrants free themselves from the shackles of universal values and build a more self-centered life goal system. Second, migrants build a more flexible order to manage their daily activities. Third, new migrants construct new relationship boundary with a principle of ''non-interference''. In addition, the lifestyle change of new migrants in Dali is not an isolated individual practice, but also promotes the Dali lifestyle migrants' group develop to a distinctive value system, affairs system, and community system. This study provides an analytical framework from motivation to practice, from individual to group. The ''lifestyle'' in this study is seen as a ''fluidity'' phenomenon type that is always open, inclusive, and dynamic. On the one hand, this study aims to clarify the ''lifestyle'' in the context of migration. On the other hand, it helps local governments to better understand the demands and behavior of lifestyle immigrants, good for creating a better policy environment, further stimulate the production vitality and promote the tourism development.