Purpose: The study aimedto provide basic data to improve the quality of home healthcare nursing services by evaluating quality of care in representative nationwide sites. Method: The current quality of home care service in 104 nationwide sites was evaluated in terms of structures, processes, and outcomes based on published standards of the Joint Commission on Accreditation of healthcare Organizations. Results: The mean score for three dimensions of quality of home care service was as follows in descending order: structures (77.6), outcomes (60.4), and processes (38.7). Additionally, by specific item compared level of quality of home care servicein each site, the highest score was 97.3 and the lowest score was 42.3 out of 100, with a mean score of 74.7. Conclusions: These findings provide a base for establishing the quality management system and to develop a tool for evaluating the quality of home healthcare nursing. The result should be continuous management and improvement of home healthcare nursing quality.