Pregnant women are easily afraid of heat during pregnancy. Firstly, with the increase of the fetus in the womb, the blood circulation of the body is accelerated and the blood flow is increased, which leads to a faster metabolic rate in the body, so pregnant women are easily afraid of heat because of the energy released and the heat produced by the body. Secondly, the hormones in the body of pregnant women are at a high level after pregnancy, which affects the basal body temperature of women and increases 0.3-0.5℃ compared with the normal body temperature. For women with hot and dry body, the hot and dry phenomenon is aggravated after pregnancy and they are more afraid of heat. In addition, not only the phenomenon of fear of heat, but also the symptoms of drowsiness, fatigue and sleepiness will occur after pregnancy. Although pregnant women are very afraid of heat, they should pay attention to keep warm to avoid getting cold, avoid catching cold due to the low body resistance during pregnancy, pay attention to rest in life, keep enough sleep, good mind and relax.