Postprandial hypotension can be registered with cardiovascular medicine. Postprandial hypotension is a drop in systolic (high) blood pressure of 20 mmHg two hours after a meal. after eating food, the digestive system mobilizes blood from other areas of the body to the gastrointestinal tract, and the supply of blood flow to other systems and organs decreases to the point where blood pressure tends to drop. Normally, this drop is small and within the body’s acceptance range. However, the elderly, diabetics, and hypertensive patients have less elastic blood vessels and are less able to regulate their blood pressure, which can easily lead to postprandial hypotension. Postprandial hypotension may induce insufficient blood supply to the heart or even lead to myocardial infarction, and may lead to insufficient blood supply to the brain to appear dizziness, cerebral infarction and other serious consequences. In order to prevent the occurrence of postprandial hypotension, when choosing antihypertensive drugs, we should try to choose long-acting antihypertensive drugs, and at the same time, you can sit down and rest for half an hour after the meal, and slowly resume standing.