Pregnant women have more saliva mainly for the following reasons: First, because the fetal growth and development during pregnancy requires increased energy and nutrients, will increase the intake by stimulating the amount of maternal saliva secretion increased, is a normal phenomenon, no special treatment is required. Pay attention to eat less and more meals during pregnancy, reduce the intake of sweets, eat more fresh vegetables and fruits or eat the right amount of soda crackers. Second, because the body hormone level changes after pregnancy and lead to the body’s metabolism accelerated, blood circulation accelerated, so that the salivary gland secretion increased, so a lot of saliva, pay attention to usually drink more water and good oral cleaning. Third, if there is indigestion, nausea, excessive secretion of gastric acid and reflux during pregnancy will also lead to increased saliva, it is best to consult a gastroenterologist and be treated symptomatically.