Extraordinary sweating in the second trimester of pregnancy may be caused by high temperature, vigorous metabolism or calcium deficiency, etc. It is necessary to pay attention to reasonable cooling, supplementation of water, and moderate supplementation of calcium. In the second trimester of pregnancy, the basal body temperature rises due to the vigorous metabolism, and if you do not pay attention to ventilation or the temperature is relatively high, you will sweat a lot. First of all, you should pay attention to reasonable clothing, avoiding too thick bedding, and also pay attention to ventilation and cooling to improve the phenomenon of excessive sweating, and pay attention to the appropriate amount of hydration, drink more water. If the phenomenon of excessive sweating does not improve after paying attention to clothing or ventilation, we need to check whether the trace elements are caused by calcium deficiency, need to take calcium gluconate or calcium carbonate under the guidance of the doctor and other medications such as calcium supplements, and in daily life to eat more milk products, fish, shrimp, or soybean products and other foods containing calcium, calcium supplementation is sufficient can also improve the phenomenon of excessive sweating. Sweating in the second trimester of pregnancy, but also diligent change of clothing, wear good ventilation of cotton clothing, to avoid cold and flu.