Drooling bad breath can not blindly use drugs, should first find the cause of the disease and then treatment. If due to physiological factors, the corresponding adjustment can be; if oral disease, need medication; if due to systemic diseases, need to identify the cause and then treatment. 1. Physiological factors: If you have more food debris and dental calculus, it may also cause drooling and bad breath, at this time, you need to pay more attention to oral hygiene, develop the habit of rinsing your mouth after meals, and pay attention to removing the food debris left in the teeth, generally no special treatment is needed. 2. Oral diseases: If you suffer from oral diseases, such as periodontitis, you need to follow the doctor’s instructions for periodontal sequence treatment, oral antibacterial drugs such as metronidazole, you can also inhibit the formation of plaque through the chlorhexidine gargle. 3. Systemic diseases: If the above measures are not effective after use, then we need to be alert to systemic diseases. (1) If there is gastrointestinal disease: generally can be under the guidance of the doctor to take digestive aids, such as polypeptide tablets, lactase sheng, and so on. (2) If there is a gastrointestinal infection: can take anti-Helicobacter pylori drugs, such as bismuth potassium citrate; anti-anaerobic drugs such as metronidazole. It can be seen, when drooling bad breath should pay more attention to whether it is accompanied by other symptoms, to timely medical treatment under the guidance of the doctor for treatment and medication. Normally it is recommended to drink more water to keep the mouth moist.