Abstract: There are many problems in China’s construction of urban residential housing,such as the dislocation of real estate function, the serious imbalance of supply structure,the imperfectness of the housing guarantee system and the safeguard mechanisms and so on. Using the qualitative analysis and quantitative analysis method, this paper takes Shanxi Province’s urban housing construction as an example and provides the measure methods of urban family income line for housing safeguard and urban guarantee housing quantity. Based on this,the paper reaches the results of the year income of classified city families,the proportion of families needing housing safeguard, the demand quantity of the public rental housing,the urban and state-owned mining shanty town transformation and commercial houses during“the 12th five-year”period. Finally, the paper puts forward the demand of different kinds of houses each year and aggregate demand in the cities of Shanxi during“the 12th five-year”period,and then it analyzes the main factors influencing the housing safeguard scale,which have certain significanc for China’s western region city housing planning.