Normal blood pressure at rest, low blood pressure after activity, may be a normal physiological phenomenon, but also may be a manifestation of cardiac function damage, you can take the general treatment of dobutamine and other drugs. 1. Physiological phenomenon: after exercise, due to the decline in blood volume, while the peripheral vasodilatation, may lead to a physiological drop in blood pressure. General physiological blood pressure drop, systolic blood pressure drop of no more than 10mmHg, diastolic blood pressure drop of no more than 5mmHg. and is not accompanied by other discomforts, this time can be observed. 2. Ischemic heart disease: when a person suffers from ischemic heart-related diseases, due to cardiac insufficiency, resulting in a decrease in blood transfusion volume of the heart during exercise, which ultimately leads to a drop in blood pressure, and at this time, if you use dobutamine and so on, there will be a short-term effect, but aggravate myocardial ischemia. Therefore, it is most important to treat the primary cardiac ischemic disease while combining medications. If your blood pressure is normal at rest and low after activity, there are other possibilities, so it is recommended that you consult a doctor in time to improve the examination, find out the cause of the disease, and have targeted treatment.