Organ transplants are mainly used to treat end-stage diseases of the heart, lungs, liver and kidneys. Transplant waiting time needs to be based on the disease suffered by the patient, for example, the heart has a disease, once the heart failure occurs, the patient can not sustain life, the urgent need for a donor heart; lung disease patients can be tolerated for a long time, there is no acute infection as well as acute exacerbation of the period, at this time, may be registered, maintained for a period of time, the donor in the country looking for the may be relatively easy; patients with liver diseases such as hemorrhage from liver cancer, or outbreaks of severe hepatitis, these kinds of patients’ lives are at stake and the donor liver is urgently needed for transplantation. Once registered, the patient will also be given a liver transplant as soon as possible; kidney disease, because patients with uremia can be treated with dialysis replacement therapy, can be registered online to find a suitable match for transplantation, the time may be shorter, and some patients may be longer, about 2 weeks to 2 years or so time are possible.