The mean age of Japanese patients requiring a dialysis induction is 67.7-year-old in 2007. Comparing with hemodialysis, peritoneal dialysis is fit for old patients because of a lesser degree of influence on cardiovascular system and a lesser degree of restriction on the issue of water and food. However, a home care system for patients with peritoneal dialysis has not been established. In Nagasaki city, "Nagasaki Home Doctor Net" supports the home care through many kinds of medical occupational linkage. By applying this system, we are trying to establish a supporting system for elderly patients with peritoneal dialysis. Furthermore, in each patient, we make the "Putit-mailing list" on Internet. It is a very effective tool for all medical care members to send and get the information about the patients on time and timely.