There are many reasons for numbness of the face during pregnancy, such as calcium and iron deficiency, anemia malnutrition, pulpitis, facial neuritis or facial paralysis. 1. Calcium and iron deficiency, during pregnancy, the nutritional needs of pregnant women will be greater, usually need to supplement some more calcium and iron preparations separately, otherwise it will lead to calcium deficiency, which will cause convulsions or numbness of the face, and even affect the development of the fetus. 2. anemia malnutrition, the most common anemia in pregnancy is iron deficiency anemia, and megaloblastic anemia. If it is iron deficiency anemia, also need to supplement iron, if it is megaloblastic anemia, to supplement folic acid and vitamin B12, but also need to supplement protein, to prevent the occurrence of malnutrition, affecting the development of the fetus, the specific need to comply with medical advice. 3. Pulpitis can also affect the nerves of the face, and toothache can occur at night, because the pulp contains nerves and blood vessels, due to bacterial infection, chemical factors, physical factors and other factors that cause inflammation of the pulp, tooth pain and facial numbness can occur. 4. Facial neuritis or facial paralysis, belonging to the facial nerve disease, if there is a serious case of facial numbness, you need to go to the neurology department in a timely manner to improve the relevant examination, to avoid a more serious situation. Therefore, the clinical pregnant face numbness of the patient is recommended to timely medical treatment, in order to clarify its specific causes, and give targeted treatment.