Pregnant women in the 6th month need to take proper calcium supplements because they are already in the middle of pregnancy and have a higher demand for calcium at this time. However, it should be noted that calcium supplementation should not be excessive, and excessive calcium supplementation may affect the growth and development of the fetus, and the problem of placental calcification. The common methods of calcium supplementation for pregnant women are as follows: 1. diet: eat more calcium-rich foods, such as milk, fish, large bone broth, etc., to promote the absorption of calcium; 2. drugs: if there are frequent calf cramps or poor sleep, etc., you can first go to the hospital for examination and take calcium-rich drugs under the guidance of a doctor, or take vitamin D at the same time as calcium supplementation to promote the absorption of calcium; 3. sunlight. Daily outdoor exposure to sunlight for about 3 hours can also promote calcium absorption, but you need to avoid sun exposure at noon when the sun is strong to avoid heat stroke. Calcium supplementation during pregnancy is closely related to the early malnutrition of the fetus and the occurrence of some chronic diseases in adulthood, such as diabetes, primary hypertension and cardiovascular disease, so pregnant women need to pay attention to calcium supplementation, but not in excess.