Three months after the kidney transplantation due to immunosuppressant dosage, the body resistance is weakened, increasing the chance of infection, so patients should try to: (1) regularly recheck cyclosporine/FK506 concentration and body immune function, so that the body in an effective anti-rejection state at the same time the chance of infection in the least state; (2) try to avoid activities in public places Especially in the epidemic season of infectious diseases; (3) avoid cold, prevent cold, remember that cold may induce rejection reaction, such as cold aura should be taken in advance to prevent drugs, such as cold Qing, strong vitamin C silver warp tablets, etc. Once the cold is confirmed, you should find an experienced transplant doctor for consultation and treatment, avoid the application of drugs that damage the kidney and drugs that have interaction with cyclosporine; (4) do not keep poultry, pets.