Dizziness is a common symptom during pregnancy, and there are many causes of dizziness. It is necessary to conduct relevant examinations according to the duration and severity of dizziness to investigate the causes and carry out cause-specific treatment. I. Physiological dizziness: 1. Early pregnancy reaction: the increase of estrogen and progesterone and human chorionic gonadotropin (HCG) in the body of pregnant women in early pregnancy, the body can not adapt for a while, some people will have nausea, dizziness, vomiting, weakness, drowsiness and other symptoms, this is a normal phenomenon, and so the body slowly adapt to the changes in hormone levels, related dizziness and other symptoms will be relieved. When the onset of dizziness, you should immediately rest in bed, you can put a cold water towel on your head, do not shake your head, so as not to aggravate the dizziness; 2, discomfort in the position: some pregnant women improper position will compress the blood vessels, resulting in insufficient blood supply to the brain, inducing dizziness. You should avoid lying on your back or sitting in a semi-lying position and try to rest in a left-sided position to prevent dizziness from occurring. Second, pathological dizziness: 1, blood pressure abnormalities: hypertension or hypotension, can lead to cerebral tissue ischemia and hypoxia, dizziness, headache symptoms, serious cases may also lead to blurred vision, and even fainting. Once the dizziness attacks, you should immediately sit down or lie down to stop the dizziness from intensifying, and at the same time, according to the blood pressure level, rehydration therapy or medication can be given; 2, hypoglycemia: some pregnant women during pregnancy due to pregnancy reaction, nausea and vomiting, eating less, etc., resulting in low blood sugar, weakness, dizziness, cold sweat, palpitations and other uncomfortable symptoms. At this time, pregnant women should have a regular diet, balanced nutrition, and can carry with them milk sugar, once the dizziness attack, can quickly oral sugar food to relieve dizziness; 3, anemia: anemia is a common cause of dizziness, pregnant women should consume iron-rich food in daily life, such as animal blood, pork liver, lean meat, etc..