Pregnant women’s body is afraid of cold, many of them are physiological, and some of them are afraid of cold after pregnancy is caused by some diseases. The main reasons are as follows: 1, too little activity, after pregnancy, women’s physical activity is too little, the metabolic rate slows down, insufficient heat production, thus causing the symptoms of fear of cold. 2, not eating on time, hypoglycemic reaction, some pregnant women are always worried that they will eat too much fat during pregnancy, not eating on time, especially not eating breakfast on time, causing hypoglycemic reaction, will also appear the symptoms of fear of cold. 3, pregnancy The level of progesterone in the body rises, progesterone has a warming effect, will make the pregnant woman’s own body temperature slightly increased, when the external environment temperature is low, pregnant women will feel afraid of cold. 4, hypothyroidism, pregnant women with combined hypothyroidism, the metabolic rate will slow down, heat production will be reduced, pregnant women will have obvious symptoms of fear of cold.