changes in cultural and life-style are the transition from traditional culture to modern culture, charcaterized by the transiting logic from single-style culture to multi-style culture. Diversified and individualized tendencies are not only specific characteristics of Vietnam but also common phenomena in all countries which are industrializing and modernizing. In general, this evenful process is occuring quickly and changing continuously. It is not only in appearance but in role, position in society. Such diversified manisfestions make the boundary between social goups less clear as in traditional society. In social sciences, they call it as surprising leap of mobile society and it creates much difficulty for indentifying individual.