Nibpdia too low translated into Chinese means low blood pressure, mostly displayed on cardiac monitors. The common causes of low blood pressure are as follows: 1, cardiovascular disease, common heart failure, myocardial infarction, arterial valve stenosis, etc., will lead to a reduction in cardiac output, which will ultimately cause a drop in blood pressure; 2, transient major blood loss, such as surgery, major trauma, etc., which tends to lead to excessive blood loss in the human body, which can lead to a sharp reduction in the volume of circulating blood, resulting in a drop in blood pressure; 3, infectious diseases, bacteria, Viral infections can cause small blood vessels to dilate, which in turn reduces the relative blood volume and lowers blood pressure; 4. Other diseases, such as endocrine diseases, can also cause a decrease in blood pressure, most low blood pressure does not cause discomfort, and a few will feel dizzy, which requires monitoring blood pressure and actively searching for the primary disease.