If the indexes have been normal after kidney transplantation and suddenly the blood pressure increases, it may be secondary hypertension after transplantation, which is often treated with drugs or surgery. 1. Secondary hypertension after kidney transplantation needs to be treated with oral antihypertensive drugs as prescribed by doctor, such as hydrochlorothiazide, nifedipine, timosartan, bisoprolol, benadryl, etc., to prevent high blood pressure from affecting the transplanted kidney. The medication should be taken regularly, even if the blood pressure returns to normal, keep low sodium and low fat diet, and pay attention to the routine of work and rest. 2. Elevated blood pressure after kidney transplant may also be caused by arterial stenosis, which can be normalized by percutaneous angioplasty. It should be noted that it is also important to pay attention to whether the drop in blood pressure is caused by the side effects of immunization agents. Suddenly high blood pressure after kidney transplantation is recommended to consult a doctor in time, and actively treat under the guidance of a physician, not blindly use medication on their own.