Blood donation is not normally recommended after using high blood pressure medication. Higher pressure exerted by the blood on the arterial walls may easily cause hypertension. Coronary arteries of hypertensive patients are easily affected after blood donation, which may in turn cause angina pectoris, adversely affecting the patient’s health. At the same time, the blood flow rate of hypertensive patients may slow down after blood donation, which may aggravate their hypertension. In addition, after using medication, the blood of hypertensive patients contains antihypertensive drug components, which will have a certain impact on the health of other people, therefore, hypertensive patients should not transfuse blood to other people through blood donation. Hypertensive patients need to follow the doctor’s instructions for treatment, go to the hospital regularly to test their blood pressure, use the appropriate medication to control the blood pressure level under the doctor’s guidance, exercise moderately and pay attention to a light diet in order to promote the recovery of their condition.