Dizziness at 15 weeks of pregnancy may be caused by hypotension and hypoglycemia. In early pregnancy, due to pregnancy reaction, pregnant women have poor appetite, most of them will have nausea, vomiting and other pregnancy reactions, and will suffer from malnutrition, reduced food intake, resulting in hypoglycemia, dizziness, and in serious cases, fainting and other symptoms. According to the theory of Chinese medicine, after pregnancy, because the essence and blood are gathered to nourish the fetus, the Yin and blood of pregnant women are insufficient, and the essence and blood cannot be glorified, so symptoms such as dizziness and headache will occur.