Excessive sweating of pregnant women may be a normal physiological phenomenon, or it may be related to calcium deficiency, vegetative nerve disorder and other factors. 1. Physiological phenomenon: due to the rising level of estrogen in the body after pregnancy, blood circulation increases, the basal metabolic rate increases, the blood flow rate increases, the metabolism of pregnant women is vigorous, the skin emits more heat and thus the phenomenon of excessive sweating, fear of heat, so pregnant women sweating is a normal physiological phenomenon during pregnancy. 2. Calcium deficiency: women in pregnancy due to the continuous growth and development of the fetus, the demand for calcium is relatively large, if pregnant women with insufficient calcium intake may appear calcium deficiency, which can cause increased sweating, leg cramps and so on. 3. Vegetative nerve disorders: pregnant women after pregnancy due to hormone secretion abnormalities, emotional and other aspects of the changes, may cause vegetative nerve disorders, which leads to sweating, palpitations, chest tightness, shortness of breath and other symptoms. It is recommended that pregnant women pay attention to rest, avoid strenuous exercise or engage in heavy physical labor, in addition, because sweat is rich in potassium and sodium, excessive sweating is easy to cause potassium and sodium deficiency, pregnant women need to drink more water, eat more fruits and vegetables, try to choose loose, breathable clothes, take baths, change underwear and so on.