As China’s population ages, the health problems of the elderly have also attracted much attention. Lifestyle changes have led to social atrophy among the elderly. Outdoor activities are becoming increasingly common as a daily practice to alleviate social atrophy. Taking Yuzhong District, Chongqing City, as an example, the IPA-Kano model was used to measure the environmental sequence characteristics of a supportive environment for small green space activities. The study found that: (1) The characteristics of small green space environment aff ecting the activities of the elderly are signifi cantly diff erent, and 20 key environmental factors aff ecting the activities of the elderly are determined. Among them, lawn coverage area, interface permeability, spatial scale, vegetation richness, environmental maintenance, and spatial enclosure are the most basic factors to support the activities of the elderly. The quality of the shade coverage area, the type and quantity of leisure facilities, the type and quantity of entertainment facilities, the type and quantity of landscape facilities, the type and quantity of auxiliary facilities, and site slope and space safety will directly aff ect the elderly’s activity experience. (2) On the basis of the above research, the actual performance of the small green space environment is superimposed. Using the IPA analysis matrix, the spatial environment of the 10 case samples is divided into four areas: maintaining the status quo, key improvement, slow improvement, and appropriate reduction. Determine the order of its advantages and disadvantages, and propose optimization timing suggestions for small green spaces, providing a theoretical basis for the fi ne renewal of elderly-friendly green spaces and the construction of a healthy living environment, and off ering crucial practical reference value for promoting healthy aging.