Since China’s transformation to a market economy, residential segregation has become increasingly serious in Beijing. This paper analyses the problems of “affordable housing” and “low-rent housing” schemes of Beijing and makes suggestions on diminishing the residential segregation of the city by improving the Housing Security System. Since China’s transformation to a market economy, residential segregation has become increasingly serious in Beijing. This paper analyzes the problems of “affordable housing ” and “low-rent housing ” schemes of Beijing and makes suggestions on diminishing the residential segregation of the city by improving the Housing Security System.