After a night’s sleep time, you wake up in the morning with cloudy, yellowish saliva. And the night breathing is not good or oral inflammation have a certain relationship. For this situation, it is recommended to drink more water, increase circulation, maintain oral hygiene, there is a certain improvement. In addition, if accompanied by cough, chest tightness and other symptoms, it is recommended to improve the chest X-ray or chest CT examination. Rule out bronchitis or lower respiratory tract infection caused by a series of symptoms. In addition, you can do a saliva bacterial culture. After further clarification of the diagnosis, and then carry out the adjustment of drugs.