Dizziness in early pregnancy may be caused by changes in the level of hormones in the body, the weather is too hot, and other reasons, and may also be caused by hypoglycemia, upper respiratory tract infections and other diseases. 1. Physiological factors: Early pregnant women due to changes in the level of estrogen and progesterone in the body, will lead to an increase in the body’s blood volume, part of the blood will be prioritized for the uterus, which may lead to transient insufficiency of blood supply to the brain leading to dizziness, fatigue and other symptoms. In addition, hot weather, emotional excitement and other factors can induce dizziness. 2. Hypoglycemia: Physical exertion in early pregnancy will rise significantly compared to the non-pregnant state. If you don’t eat in time, it will lead to a drop in blood glucose concentration, resulting in weakness, dizziness and other hypoglycemia-related symptoms. 3. Upper respiratory tract infections: Early pregnant women, if their own immunity decreases, or do not pay attention to warmth and other circumstances, may lead to pathogens into the respiratory tract and other tissues, inducing upper respiratory infectious diseases. Some patients may experience different degrees of dizziness, nasal congestion, fever and other uncomfortable symptoms. In addition, there are more causes of dizziness in early pregnancy, it is recommended to seek timely medical treatment to avoid other serious consequences.