There are many reasons for the fear of cold in pregnancy: First, the normal reaction during pregnancy, the placenta in the abdomen is still in the development stage, at this time the pregnant woman’s body temperature needs to be maintained at a higher level, so you will feel the fear of cold. After the early stage of pregnancy, the placenta will gradually develop and complete, the pregnant woman’s body temperature will tend to be normal, and the fear of cold will be relieved. Second, the poor physical condition or nutrition does not keep up, such as carbohydrate, fat, protein intake is not enough, can lead to weakness and cold pregnant women. Third, low thyroid function can lead to endocrine disorders and low metabolism, which can also lead to fear of cold. Fourth, after pregnancy, the immunity and resistance of pregnant women will decrease, and they will also appear to be colder than usual. Fifth, pregnant women with iron deficiency anemia, due to less hemoglobin, which affects the oxygen-carrying capacity of the blood, resulting in impaired tissue energy metabolism, people will feel cold because of the lack of heat generated. Sixth, people with low blood pressure have insufficient peripheral blood circulation, and human tissues also do not get enough oxygen and energy, and they will also experience coldness.