Urban migration has become the unevitable trend in today's centralized society. Many people from rural areas opt for giving up their rural areas lifestyle instead of pursuring their living in urban areas, esepcially mega cities like New York, Shanghai etc. Nevertheless, intensive migration from rural areas tourban areas has also led to issues like housing crisis, skyrocketing crime rates , as well as assimilation problems, this essay will shed light on and anlayze the issues I mentioned above.