Purpose: The aim of this study was to develop and to analyze the task of hospital based home care nurse practitioners in Korea. Method: The definition of home care nurse practitioners and job description was developed based on developing a curriculum(DACUM) by 7 panels who have experienced in home care nursing. One hundred fifty four nurses who were working at hospital based on home care were participated. Result: Fourteen kinds of duties were identified : the selection of home care patients; basic home care nursing; advanced home care nursing; patient/family education and counseling; medical decision making and coordination of patient service; management of home care supplies and drugs for patients; management of medical records; management of home care the agency; management of home care personnel; management of the home care supplies for agency; home care public relations; improvement of home care quality; management of long-term care service; and self-improvement. Ninety-six tasks were classified. Conclusion: The abilities for quality improvement and the advanced nursing practice of home care nurses should be empowered.