Clinically, high blood glucose and low blood pressure are common in diabetic patients, which can be categorized into acute high blood glucose and low blood pressure, as well as chronic high blood glucose and low blood pressure, resulting in different causes. 1. Acute high blood glucose, low blood pressure: common in diabetes acute complications such as diabetic ketoacidosis. High blood glucose leads to high urinary glucose, which in turn leads to increased urination. Continuous increase in urination may lead to insufficient circulating blood volume, which may easily cause a decrease in blood pressure, which is a state of shock. This type of situation is more critical, should immediately consult the hospital, timely treatment, otherwise life-threatening. 2. Chronic high blood sugar, low blood pressure: high blood sugar patients are usually accompanied by high blood pressure, but if the blood sugar long-term control is not good, it will lead to autonomic neuropathy, etc., affecting the heart’s blood supply, pumping ability, or vascular elasticity decreases. If the patient suddenly changes position, the blood distribution is not balanced, which leads to low blood pressure, dizziness, etc., and even sudden death. It is recommended to move slowly when getting up, etc. When patients detect their own high blood sugar, low blood pressure, there may be other reasons, you need to go to a regular hospital in time, by the doctor to fully assess the condition to be treated correctly, do not blindly self-treatment delayed condition.