本文利用八十九年戶口及住宅普查資料，估計居住住宅所有權屬與住宅品質對於戶內老年人口健康狀態的影響。我們以是否有「需他人幫忙長達三個月以上」的日常生活活動(ADLs)來衡量老年人的健康狀態。除此之外，我們分別以平均戶內每成人享有面積、平均戶內每房間人數、以及屋齡等指標來衡量居住條件及住宅品質。就住宅所有權屬而言，我們的實證結果發現住在自有住宅的老人會比住在租押租及借住住宅的老人較為健康。結果也發現，居住條件及住宅品質對於老年人的健康狀態也有顯著的正面影響；同時，當居住條件愈擁擠，或者住宅品質愈差，則老年人的健康狀態愈不好。由於住宅品質的確會對老人健康產生顯著影響，因此政府更應加強對於老人住宅政策的推動。 Using Population and Housing Census data for the year 2000, this paper estimates the impact of housing ownership and quality on the health status of the elderly in Taiwan. Our measure of the health of the elderly is whether the elderly require assistances in daily living activities (ADL) for a period of more than three months. Our measure of housing quality is the house's age, as well as the size and the number of rooms each adult shares in the house. We find that the elderly living in their own houses have better health than those staying in rented or other ownership categories. Our results also find that housing quality is important in determining the health of the elderly - the aged staying in low quality housing tend to experience worse health outcomes. Since the results indicate that housing quality produces a positive effect on the health of the aged, the government should consider policies promoting the housing quality of the elderly.