The methods commonly used in housing subsidy policies include supply-side houses,demand-side cash,and rental vouchers.From the policy efficiency perspective,the government spending associated with special housing subsidies,such as houses subsides and rental vouchers,exceeds that of cash.However,the enhancement in housing welfare is greater with these subsidies compared to cash.Both rental voucher and houses subsides lead to some avoidable reduction in overall social benefits,but rental voucher surpasses houses subsides in terms of mitigating social segmentation,enhancing the availability of suitable rental housing,and fostering job-housing balance.Regarding the criterion for policy application,the development of housing subsidy programs in developed nations shows that increasing housing supply is a viable solution when there is a significant reduction in the overall scarcity of housing.Once the housing crisis has significantly diminished,replacement rental vouchers might be employed as an exact rental assistance program,with the main objective of enhancing the living conditions of destitute households by cash.Considering the significant changes in the supply and demand dynamics,it is crucial to adapt housing security strategies to local conditions and current circumstances.In cities with a substantial housing shortage,the primary focus should be on increasing the housing stock,while also paying attention to revitalizing existing properties.Rental vouchers may be adopted in cities where there is a generally balanced housing supply and demand,or in locations where there is an oversupply of housing.For poor low-income households,the policy focus is on providing cash.