From the perspective of two vertical social mobility obstacles： system-caused obstacles and market-strengthened obstacles, this paper believes that since the policy of opening-up and reform in China, the rapid and substantial increase in mobile systems is the output of the weakening of system-caused obstacles. Then space of using new systems adjust social stratum structure is extremely limited the mobility rate through different classes will slow down considerably, the closure between the classes will be increasingly enhanced. In short, the rapid formation of a stable mi...
