People with low blood pressure and hypoglycemia are not recommended to donate blood, because people with repeated symptoms of low blood pressure and hypoglycemia are relatively weak, or due to certain chronic diseases, so for sudden blood donation in about 400 ml, it is easy to have a severe hypotensive reaction, and hypotension may lead to a serious state of shock. Therefore, for people with low blood pressure and low blood sugar, try not to donate blood to protect your body. In ordinary life, people with hypotension and hypoglycemia should also be careful not to have excessive postural changes that can lead to blackouts and fainting. For people with recurrent hypoglycemia, it is important to clarify islet function and pancreatic ultrasound to rule out whether the hypoglycemia occurs due to abnormalities in the pancreas.