Sticky mouth may be related to dry weather and drinking little water, bad habits, periodontitis, gingivitis and other reasons. 1. Dry weather and low water intake: If the living environment is very dry or you drink little water, you may also have a sticky mouth. 2. Bad habits: If you have bad habits such as breathing with your mouth open, smoking, eating too much greasy and fried food, then you will have a sticky mouth after the water evaporates from your mouth, or if you drink less water after eating food. 3. Periodontitis: If you smoke for a long time or have too much mental stress, it may lead to periodontitis, and when the infection is serious, it may lead to sticky saliva, bleeding and other symptoms, and the phenomenon of sticky mouth occurs. 4. Gingivitis: If plaque, tartar, and food impaction occur in the mouth, there may be increased secretion of fluids in the mouth and other symptoms, and the phenomenon of sticky mouth will occur. There are more reasons for sticky mouth, and other diseases may also have this manifestation, such as dry syndrome. If you can’t get relief by drinking more water and adjusting your diet or if you also have symptoms such as bad breath and bleeding in the mouth, it is recommended that you seek medical attention to identify the cause and treat accordingly under the guidance of your doctor.