中国已经步入人口老龄化的门槛，居家养老是未来中国应对人口老龄化的对策。研究居家养老设施分布的合理性是地理学者的任务。老年餐饮服务设施是居家养老服务设施的重要组成部分。本文选择北京中心城区开展“老年餐桌”工作较早的西城区新街口街道为研究对象，尝试从地理学视角分析“老年餐”供需的合理性。本文调查发现，虽然新街口街道老年餐桌现已初具规模，但目前老年餐的实际供给量远小于老年人对老年餐的潜在需求。此外，现有老年餐桌对老年餐的供给意愿大于供给现状，但仍远小于老年人对老年餐的潜在需求。本文分析了这种供需不匹配与供需双方分布的关系。本文的主要结论如下：第一，街道内老年餐桌对老年餐的实际供给量和供给意愿均小于老年人对老年餐的潜在需求。这表明，只有在提高需求者的支付能力后，才能让供给满足需求。第二，现今，老年餐桌分布密度低，并主要以老年人到店就餐为主。通过调查得出，该街道老年人愿意出行就餐的最大距离为615m，在此种情况下，存在现有老年餐桌服务范围覆盖不到的区域，应在未覆盖区域内增设老年餐桌。第三，政府鼓励老年餐桌运营者为1500m范围内的老年人提供送餐服务，但由于送餐成本过高，街道内的老年餐桌无力为此范围内所有需求老年餐的老年人提供送餐服务。并且，大部分老年餐桌也没有开设送餐服务，出现该问题的症结是送餐服务半径总和与需求半径总和不一致。结合上述三个结论，本文对北京城区老年餐桌建设方案和商业性餐馆的补贴政策提出如下建议：第一，政府可以适当提高对老年餐饮服务设施的送餐补贴，进而使得更多的老年人能够享受到老年餐的社会福利；第二，在老年餐桌密度低的地区增设老年餐桌；第三，政府不必简单地提出餐馆为老年人提供送餐服务的距离。

China has entered the threshold of aging population. Home-based care for the aged will be the most effective way to deal with this problem in the near future. It is the geographers’ task to study the rationality of the spatial layout of home-based care facilities. Distributing aged food service facility is an important part of home-based care facilities. This study selects Xinjiekou Street which carries out “Dinner Table for the Aged” as the research area and try to analyzes the rationality of the supply and demand of the “Dinner Table for the Aged” from a geographic perspective.The survey found that the actual supplied quantity of aged meals is much less than the potential demand, although the program of “Dinner Table for the Aged” in Xinjiekou is starting to take shape. In addition, the quantity of willingness to provide the aged meals is larger than the current situation, but it is still less than the potential demand. This study analyzes the relationship between the imbalance of supply and demand and their spatial layout.The conclusions can be drawn as follows:Firstly，both the willingness to supply and the current supply of aged meals are much less than the potential demand. It indicates that in order to match the supply and demand, we should improve the older persons’ abilities to pay.Secondly，the density of the “Dinner Table for the Aged” is low. And the main way of aged-care food service is that elders go to the “Dinner Table for the Aged” by themselves. Their max walking distance is 615m. In this case, there are still some areas that “Dinner Table for the Aged” can’t supply service to the elders. So some new “Dinner Table for the Aged” should be set up there.Thirdly，the government encourages the operators of “Dinner Table for the Aged” to deliver meals for elders within 1500m. But the “Dinner Table for the Aged” can’t reach the objects due to the high cost of delivery. Most of the “Dinner Table for the Aged” do not deliver for cost reason. Therefore, the key problem is the radius sum of delivery service does not match the radius sum of demand.The suggestions come from three conclusions above for the development of “Dinner Table for the Aged” and the subsidy policy of the commercial tables.(1) The government can improve the subisidy of delivery service for the “Dinner Table for the Aged” to make more elders enjoy the social welfare of the aged meals.(2) Increase the number of “Dinner Table for the Aged” in areas of low density of “Dinner Table for the Aged”.(3) The government should not simply put forward the distance of delivery service for the “Dinner Table for the Aged”.