The objective of this applied research is to study the suitable impact absorbent surface in the elderly bathroom at the Banbangkhae Social Welfare Development Center for Older persons (BSWDC) in Bangkok by observing the bathroom utilization behaviors, daily activities and movements of the elderly in their bathroom as well as the survey of condition and characteristics of the bathroom at Phiboonsook and Sooksan buildings BSWDC. In-depth interviews were performed elderly persons and caring staffs participated in the study. The researcher analyzed the data obtained from interviews and questionnaires using Mean, Percent, S.D., Maximum, Minimum and the qualitative analysis on the preferred characteristics of impact absorbent surface in the bathroom. This is in order to take the collected data on factors that affect impact absorbent surface in bathroom. In order to analyze and most suitable impact absorbent surface in the elderly bathroom, data on the factors affecting impact absorbent surface in bathroom at BSWDC were collected