Calcium deficiency in pregnant women mainly manifests as cramps, some pregnant women may have loose teeth, muscle pain, back pain, weakness of limbs, numbness of hands and feet, insomnia, teeth grinding, night sweats, pregnancy hypertension, etc. Each person’s body condition is different, and the symptoms shown will be different, not necessarily 10 manifestations. As the blood volume of pregnant women increases during pregnancy, calcium in the bones will continue to dissolve to ensure the concentration of calcium in the blood. As the fetus grows and develops, it will take more calcium from the pregnant woman’s body, which will cause greater calcium loss in the pregnant woman’s body and may lead to the calcium deficiency symptoms mentioned above. If the above symptoms occur in early pregnancy, you can also take calcium supplements and vitamin D under the guidance of a doctor to correct the calcium deficiency, so as to avoid long-term calcium deficiency affecting the health of the pregnant woman and the growth and development of the fetus. Pregnant women can eat more high-calcium foods, such as milk and soy products, and get proper sun exposure to better promote the absorption of calcium.