This text uses the results of my own research about Qingxuan villages floating population who migrate to big cities and are engaged in the industry. Through the statistic analysis of the questionnaires and the in-depth interview of them, I cannot find any statistic data, such as the fundamental index, occupational career, life idea or social contact etc., to support the concept “Cenozoic era floating population" that put forward by Wang Chunguang and Luo Xia, so I think that this concept is not scientific.
