This　study　aims　to　estimate　the　migration　effect　of　the　overall　samples　and　different　flowing　scales　for　the　floating　population　from　the　perspective　of　personal　wages.　Although　we　used　both　the　OLS　and　PSM　methods　to　estimate　the　migration　effect,　we　found　that　the　PSM　method　was　preferred　in　the　study　of　migration　as　a　result　of　the　selection　bias.　The　empirical　results　show　that　there　is　a　significant　difference　in　wage　before　and　after　migration.　In　fact,　migration　increased　wages　by　15.18%　to　23.63%　overall.　Additionally,　wages　were　increased　by　44.96%　to　59.20%,　23.06%　to　26.18%,　and　10.89%　to　15.08%　respectively　for　these　three　migration　patterns:　flowing　into　the　three　largest　megacities,　inter-provincial　migration,　and　inter-city　migration　within　a　province,　but　for　this　pattern　of　inter-district　migration　within　a　city,　the　migration　effect　is　not　significant.　We　concluded　that　the　floating　population　removing　policies　of　the　largest　megacities　maybe　are　effective　because　of　the　administrative　power　of　their　government.　On　the　other　hand,　for　these　policies　of　non-largest　megacities　to　attract　labor　and　local　employment　and　local　urbanization　near　the　floating　population＇s　place　of　origin,　they　were　not　effective　enough　as　a　result　of　the　lack　of　significant　migration　effect　in　these　cities.