| Abstract | with micro-data from China Labor Urban Survey (CULS2005 and CULS2010), we test the impact of income inequality on the fertility pattern from local residents and migrants in Chinese city. After calibrating Social Economic Status, we analyze the impact of SES on the youth dependency ratio and the child number respectively. We show there are three main findings: First, the rich afford lighter burden of raising the children than the poor, no matter they are local residents or not. Second, the local residents have reach the end of demographic transition, however, the migrants still stay in the track of transition where poor try to change their fertility to catch up with the rich. During this stage, large income gap exists between the poor and the rich. The way to dwindle the disparity is improve migrants’ income to boost the transformation of fertility pattern. The last but unexpected result is the local rich incline to enlarge their family size than the poor during the low fertility level in Chinese cities. However, the migrant rich’s priority in changing family size is not obvious, no matter adding the children not living in the household or not. We try giving an explanation for the specific situation, that is, the rich households categorized by profession (Section 4) incline to enlarge their family size informally. In other words, the rich accept another female into their household to give their extra child. |