Using the re-centralization response Model and based on the survey micro data, this paper analyzes the impact of digital government and its dimensions on the urban integration of new citizens. The results show that the total effect of digital government on new citizens' urban integration is 0.438, which exceeds 0.304 of individual characteristics and  0.335 of family characteristics, which constitutes one of the three factors affecting new citizens' urban integration; Among the seven dimensions of digital government, the economic dimension has the largest effect value (0.081), followed by the benefit dimension (0.067). The impact of various dimensions of digital government on the three aspects of urban integration shows a staggered and cross lattice order, and shows significant heterogeneity in urban, ethnic and intergenerational differences.Based on this, the research puts forward strategic suggestions such as upgrading digital government, mining new digital functions and cultivating new citizens' digital literacy.