Abstract:As the population continues to concentrate in large cities, the high integration of modern technology with urban living environment has intensified the emergence of urban issues, particularly the increasingly severe phenomenon of "city disease". The research focused on two core areas: housing and transportation, and delved into their impacts on urban development and the quality of residents' lives. In terms of housing, a detailed analysis was conducted on the mismatch between housing prices and economic capabilities, the impact of limited living spaces on residents' quality of life, and the im pact of housing expenditure on people of childbearing ages. In terms of transportation, the study exam ined the impact of road resources, commuting distances, commuting time, peak-hour congestion, and urban transportation on newcomers in the workforce, and revealed the negative effects of urban trans portation challenges on residents' lives and city efficiency. These issues not only increased the pressure on residents' lives, reduced their quality of life, but also hindered the sustainable development of cit ies. Therefore, the importance of decoupling living environment was emphasized, with optimizing the urban spatial structure viewed as a fundamental solution to issues such as land resource scarcity, hous ing shortages, and traffic congestion. Further research indicated that spatial structure problems were more pronounced in large cities. To address these issues, the elevated city program was introduced, aiming to tackle "city disease" by effectively utilizing urban three-dimensional space. The elevated city program helps alleviate land resource scarcity, increase housing supply, and improve traffic condi tions, thereby providing a feasible path for the efficient and healthy development of modern cities, with the potential for long-term sustainable development.