Researches on the human mobility have made great progress in many aspects,
but the long-term and long-distance migration behavior is lack of in-depth and
extensive research because of the difficult in accessing to household data. In
this paper, we use the resume data to discover the human migration behavior on
the large scale scope. It is found that the asymmetry in the flow structure
which reflects the influence of population competition is caused by the
difference of attractiveness among cities. This flow structure can be
approximately described by the gravity model of spatial economics. Besides, the
value of scaling exponent of distance function in the gravity model is less
than the value of short-term travel behavior. It means that, compared with the
short-term travel behavior, the long-term human migration behavior is less
sensitive. Moreover, the scaling coefficients of each variable in the gravity
model are investigated. The result shows that the economic level is a mainly
factor on the migration