Getting up every morning with bad breath may be due to oral diseases, gastrointestinal diseases, bad habits, etc. It is recommended to go to the hospital for specific examination and treatment. 1. Oral caries, gingival abscess, mucous membrane rupture and infection may appear oral odor, usually should be timely treatment of dental caries, regular scaling, timely removal of plaque in the mouth, and eliminate abscesses. 2. Gastritis, gastrointestinal polyps, enteritis, colitis, etc. may appear dysbiosis, there may also be reflux into the mouth, in addition to the common Helicobacter pylori infection will also have bad breath performance. 3. often eat stimulating food, heavy flavor food, do not brush your teeth properly, smoking, staying up late, etc. will stimulate the oral cavity odor.