Measuring blood pressure just after eating is likely to be elevated. After eating, the body’s sympathetic nerves will be excited, followed by an increase in heart rate and a mild rise in blood pressure. In addition, the body’s blood volume will be redistributed after eating, and a large amount of blood will gather in the gastrointestinal tract to help digest food. The body’s effective circulating blood volume will be relatively low, and then feedback regulation of blood pressure, resulting in a slight increase in blood pressure. Daily advice is not to eat too much, which tends to increase the burden on the gastrointestinal tract, and on the other hand will cause fluctuations in blood pressure, which may induce cardiovascular and cerebrovascular emergencies. It is generally not recommended to measure blood pressure immediately after a meal to prevent its accuracy from being affected. It is recommended to measure blood pressure in the morning on an empty stomach or before and 1~2 hours after meals to get a more accurate blood pressure level.