The symptoms of blackness in front of the eyes when standing up during pregnancy are considered to be caused by postural hypotension and transient cerebral blood supply deficiency, because the patient’s blood pressure is not adjusted in time when standing up suddenly after sitting for a long time, which can lead to dizziness and blackness in front of the eyes. In addition, after pregnancy, it is also important to pay attention to whether there is low iron anemia, the patient’s body is relatively weak, but also easy to get up when the patient appears black in front of the eyes symptoms. There is also postural hypotension, the patient may be weak and have low blood pressure, after pregnancy the burden on the heart is heavy and this symptom may occur when the patient suddenly stands up. It is recommended that the patient visit the hospital for routine blood and serum ion tests to clarify the presence of anemia. If there is a clear indication that there is a difference of more than 20mmHg between the lying and standing blood pressure, the patient should pay more attention in ordinary life, must be slow when getting up, can take oral pulse drink to raise the blood pressure, avoid standing up violently, so as not to fall and cause unnecessary injury.