Pregnant women often sweat is a common phenomenon during pregnancy. After pregnancy, due to the increase in circulating blood volume, increase in cardiac output, metabolic rate will also increase, pregnancy secretion hormone will rise, the combination of factors make pregnant women in a higher metabolic state, easy to appear sweating, fear of heat phenomenon. After pregnancy some pregnant women due to emotional instability, plant nerve dysfunction, vascular diastolic function instability, so that pregnant women occur sweating increased phenomenon. Pregnant women should not be nervous, but relax, eat a balanced diet, eat light, easy to digest food, outdoor activities every day, appropriate vitamins and minerals, especially appropriate supplementation of calcium, iron, etc. to reduce the symptoms.