廉租住房是政府向城镇居民收入低且住房困难的家庭提供的社会保障性公共住宅。廉租住房住户主要是下岗职工、体制外的非正式就业者(小商小贩等自由职业者)、早期的退休职工、低保户和农村进城务工者等。他们大部分是老年人、残障人士和有严重慢性疾病者。按照廉租住房的退出机制,如果住户的条件变化了,不再符合廉租住房的居住条件时就必须搬出廉租住房,具有流动性。这些老年(甚至中年)住户搬进来时是健康的,过了几年,不健康了,生活能自理的变成半自理,甚至不能自理了;即使是暂时没有老年人的家庭,随着岁月的流逝,当时进住的青壮年人也会成为老年人。这些 Low-rent housing is a social security public housing provided by the government to families with low incomes and housing difficulties of urban residents. Low-cost housing tenants mainly laid-off workers, outside the system of informal employment (small traders and other freelancers), early retired workers, subsistence allowances and migrant workers in rural areas. Most of them are seniors, people with disabilities and people with severe chronic illnesses. In accordance with the exit mechanism of low-rent housing, if the conditions of households have changed and no longer meet the living conditions of low-rent housing, they must move out of low-rent housing and have liquidity. These elderly (even middle-aged) tenants are healthy when they move in. After a few years, they are unhealthy and they can become semi-self-employed or even self-employed. Even for families without the elderly, As time goes by, young adults who live there will also become seniors. These ones