Under normal circumstances, dry mouth will not occur after pregnancy. If dry mouth occurs, it is advisable to rule out the possibility of gestational combined diabetes mellitus. In case of gestational diabetes, it is recommended to control the diet appropriately. It is better to get a diet chart from the nutrition department and to control the diet strictly according to the diet chart. It is also recommended to treat with medication if necessary, depending on the degree of diabetes. In addition, if you have dry mouth without elevated blood sugar, it is recommended to drink more water so that you can avoid the dry mouth. It is also recommended to visit a dentist to find out if there is a possibility of lesions in the oral mucosa.