Abstract: The migrant population of the new generation has gradually become the main part of the migrant population, Its subjective well-being is not only an important manifestation of its quality of life, but also has an important impact on China's urbanization process, level and quality, urban sustainable development and so on. Therefore, this article attempts to analyze influence of environmental adaptation on the subjective well-being of the new generation of migrant population, from the three dimensions of the housing condition, community environment, and city evaluation, compared with the migrant of population old generation. The study found that factors of housing conditions such as building types and housing property rights, factors of community environment such as property services, neighborhood friendliness, supermarket convenience, urban evaluation factors such as living standards of city have significant positive effects on the subjective well-being of the new generation of migrant population, which is totally different from the situation migrant population of old generation. On this basis, the countermeasures to improve on the subjective well-being of the new generation of migrant population are put forward.