The secretion of saliva in the mouth all the time during pregnancy may be caused by the change of hormone levels in the body, accelerated metabolism, and high luteinization levels. 1. Changes in hormone levels: The hormone levels of the body will change after pregnancy, which may cause an increase in secretions from the oral mucosa, and then appear to be secreting saliva all the time. 2. Accelerated metabolism: the metabolism of a woman’s body changes during pregnancy, providing nutrition to the fetus at the same time, glandular secretion will also increase, resulting in the secretion of saliva all the time. 3. High corpus luteum level: When the corpus luteum level increases during pregnancy, the body will experience vomiting and acid reflux, which in turn causes the glands to be stimulated by acid, resulting in such symptoms. There may be other reasons for the constant secretion of saliva in the mouth during pregnancy, so it is recommended that you go to the hospital in time for a complete examination to determine the cause of the disease and then follow the doctor’s instructions for treatment.