The population of elders reached 2.6 million (11.15% of the total population) in 2012, indicating fast aging of Taiwan society in the recent years. Senior care facilities provide care and assistance for elders who have difficulty in self-care, and designs of barrier-free environment are crucial to maintain and improve their quality of life as well as the quality of care services. This paper investigated senior care facilities in terms of space configuration and function of use, emphasizing on user behavior and needs. The most common assistive devices used by the senior residents were wheelchairs, rollators and walkers. In addition to physical disabilities, many residents are suffered from sensory and cognitive impairments. The user behavior and needs of barrier-free environment mainly focus on outdoor pathways, indoor entrances, indoor pathways and hallways, bedrooms, stairways, elevation devices, and bathrooms/toileting equipment. Strategies for the designs of barrier-free environment were proposed based on the current development and limitations of senior care facilities.