Wake up in the morning bad breath and saliva cloudy yellow symptoms, considering the presence of oral periodontitis, gastrointestinal diseases or inflammation of the throat problems caused by the need for different causes to take different treatment. 1. Periodontitis: periodontitis patients typical clinical manifestations are bleeding gums, bad breath, loose teeth, bleeding gums mixed in saliva resulting in cloudy yellow saliva, this situation should be to the hospital stomatology department using ultrasonic scaling, thoroughly will be the dental calculus, as well as soft tartar, plaque and other irritating factors thoroughly cleaned up, and alternately use hydrogen peroxide and saline rinse gingival sulcus, and then on the composite iodine glycerine solution or Pelio and other drugs to treat. 2. Gastrointestinal diseases: the human gastrointestinal tract gastroesophageal reflux or Helicobacter pylori infection and other diseases, due to changes in body position at night, prone to reflux phenomenon, so it is easy to get up in the morning to find bad breath and yellow saliva and other problems, need to go to the hospital gastroenterology department under the direction of the doctor to use metronidazole tablets or omeprazole enteric-coated capsules and other medications to carry out joint treatment. 3. Inflammation of the throat: the presence of inflammation of the throat or tonsil stones can easily lead to redness and swelling of the throat overflow pus, which leads to bad breath symptoms, pus mixed in the saliva will also appear in the mouth cloudy yellow problem, need to take cephalosporin antibiotics or amoxicillin and other drugs to improve. Should promptly go to the regular hospital examination, under the guidance of the physician to use drugs.