Heart transplantation complications are as follows: 1, donor heart failure, mainly refers to the donor implanted in the body, did not achieve the normal heart supply role, the cause may be caused by the donor itself, can also be the effect of the recipient factors, but also include myocardial protection methods and donor heart in the process of delivery of poor protection measures or surgical skills; 2, simple right heart failure is one of the early complications after heart transplantation, and simple right heart failure There are many causes, including pulmonary hypertension, low myocardial ischemic tolerance, air entry in the right coronary artery or the effect of brain death toxins; 3. Early bleeding after heart transplantation is mostly caused by surgical reasons, and bleeding caused by pressure and cardiac diastolic activity is easy in all four anastomoses of heart transplantation; 4. Infection is an important cause of death and complications after heart transplantation. Infections include bacterial infections, fungal infections, viral infections, etc.; 5, rejection reactions; 6, coronary arteriosclerosis of the transplanted heart, as the transplanted heart is disconnected from the nerve, so coronary artery disease is detected later and the symptoms are not as common as angina pectoris, or even the absence of angina pectoris; 7, tricuspid valve closure insufficiency, in addition to the causes of right heart failure and high pulmonary artery resistance, common causes include incorrect endomyocardial biopsy, or multiple endomyocardial biopsies resulting in rupture of the tricuspid tendon cords and papillary muscles.