Low blood pressure in myocardial ischemia is more serious. Myocardial ischemia results from an imbalance between myocardial oxygen supply and oxygen consumption. Low blood pressure in myocardial ischemia will make the blood perfusion to the ventricular muscle more insufficient, thus affecting myocardial blood supply, oxygen supply, and aggravate myocardial ischemia, which may cause patients with heart failure, cardiac insufficiency leading to lower blood pressure, may induce acute cerebral infarction or other organs ischemia and hypoxia leading to multiple organ failure. Myocardial ischemia will also lead to a decrease in blood pressure, this time should be followed by the application of antihypertensive drugs such as norepinephrine or rehydration solution to raise blood pressure, but at this time and then low blood pressure will only exacerbate the risk of the two interact with each other, the formation of a vicious circle, and ultimately worsened cardiac function, affecting the health of the organism. If myocardial ischemia occurs low blood pressure should be timely to the hospital, follow the doctor’s instructions to infuse fluid rehydration filling blood vessels, at the same time should follow the doctor’s instructions to treat