The wage gap between rural-urban immigrant and urban resident is an important issue related to common prosperity. Under the background of large-scale citizenization of rural-urban immigrant, can urban-hukou obtainer achieve wage assimilation to urban resident? Base on the formation and bridging of the institutional segmentation of labor market, this paper sets up a theoretical framework to analyze and discuss whether urbanhukou obtainer can achieve wage assimilation though the data-set of China Household Income Projection survey ( CHIP ) in 2013. Meanwhile, Oaxaca-Blinder wage decomposition, propensity score matching ( PSM) and other empirical tools can be used to investigate the dynamic process of wage assimilation of urban-hukou obtainer in the temporal dimension and the heterogeneity of this dynamic process in different ownership sectors and different urbanhukou obtainer subgroups. The results finds: 1) Labor market division under traditional rural-urban dual structure is the institutional reason for the immigrant population to fail to complete wage assimilation. 2) After citizenization, with the gradual elimination of labormarket segmentation, the urban-hukou obtainer can gradually realize the wage assimilation with the original urban residents, but it takes more than 20 years. 3) In the heterogeneity analysis, it takes longer time for the residents in the public sector to complete wage assimilation than those in the public sector whose land has been expropriated. The above results show that the citizenization of migrant ( agricultural transfer population) has a great social welfare effect in ensuring income equity, and citizenization should become an important strategic fulcrum to achieve the goal of common prosperity.