Japan Organ Transplant Network is the only organization which makes the most of the donor's or his family's will, and be mediation between donor and recipient who needs organs for his life. 7 blocks are devided in Japan, 17 transpant coordinators are arranged 24-hour correspondence. JOTnw established a stern committee in neutral position and then having been watching the trasparency . Transplant coordinator must keep the secret of the patient absolutely. If not, transplant coordinator would be punished by the law.

Transplant medical treatment can not do without cooperation between relation establishment and meny staffs. 7 block center in Japan have prepared the systems of cooperation among each transplant medical center, Kidney bank, organ bank, inspection establishment of HLA, other medical institution.