The fear of cold in early pregnancy may be due to problems such as anemia or high blood pressure after pregnancy, or low thyroid hormones that cause feeling cold. After pregnancy, the hormone level of the organism increases, the structure of the body changes, there will be different early pregnancy reactions, and the body feels cold, mostly related to the lack of qi and blood. Most people are prone to early pregnancy reactions such as nausea, desire to vomit, dizziness and weakness in the early stage of pregnancy, which leads to a decrease in immunity and also a fear of cold. Before the placenta development is completed in the first 3 months, the pregnant woman’s body temperature is slightly higher, which shows fear of cold; after the placenta development is completed, the body temperature gradually tends to be normal, due to the pregnant woman’s high metabolism, which mostly leads to a hotter body, which shows that she is not afraid of cold in late pregnancy. The fear of cold at the beginning of pregnancy may also be due to poor physical condition or nutrition not keeping up, such as insufficient intake of carbohydrates, fats and proteins. There is also a possibility that the thyroid function is relatively low, pregnant women in the early stages of pregnancy is best to do a good check of thyroid function to prevent hypothyroidism on the baby’s intellectual damage.