Jerk stand up black eyes and dizziness, may be related to postural hypotension, may also be due to hypoglycemia, iron deficiency anemia and other reasons. 1. Postural hypotension: If you have been in a squatting or lying position for a long time, standing up violently will cause the blood of the whole body to be unable to redistribute rapidly in a short time, thus making the brain at the highest level of ischemia and hypoxia, and you may experience black eyes and dizziness. 2. Hypoglycemia: If there is hypoglycemia in the body, the tissues and organs can not get enough energy supply, resulting in lack of oxygen in the brain. Standing up abruptly in this condition will aggravate the symptoms of cerebral hypoxia, thus causing black eyes and dizziness. 3. Iron deficiency anemia: due to the number of hemoglobin becomes less, the blood oxygen carrying capacity is insufficient, resulting in the brain in a chronic lack of oxygen. In this case, if you get up and stand up, it is easy to aggravate the lack of oxygen in the brain, thus causing black eyes and dizziness. If you stand up and get dizzy, you may also be caused by other reasons. If the symptoms occur frequently, you should consult a doctor as soon as possible to diagnose the cause and then give targeted treatment.