With the aging problem rising in China,the development of elderly apartments answers the present demand of old-age nursery.However,poor quality problems exist in the traditional elderly apartments such as unitary space structures and old facilities.Therefore,it is important to conduct a comprehensive and quantitative assessment on the outdoor landscape of the elderly apartments based on the characteristics of the target users.There are various factors affecting the outdoor landscape space environment of the apartments for the elderly.This paper adopts the investigation methods of field observation,questionnaire survey and interviews and selects 5 first -rate indicators and 20 second -rate indicators for the factor set.Questionnaire survey of satisfaction is implemented and the results are processed with factor analysis method.The results show that the users’ satisfaction ranking of the outdoor landscape of T apartment for the elderly goes from top to bottom as:road landscape, landscape facilities, special sizes, social culture and plant sights. Based on the results of post-use evaluation(POE) analysis,optimization suggestions are proposed from the perspective of horticultural therapy.