Celiac disease refers to erosive gastritis, which is not related to bad breath in nature. Helicobacter pylori infection may be accompanied by symptoms of bad breath, in addition, if celiac disease is accompanied by other diseases that may cause bad breath, the patient may also experience symptoms of bad breath. Celiac disease describes a pathological change in the mucosa of the stomach, in which superficial ulcers appear in the gastric mucosa, the depth of which does not exceed the muscular layer of the mucosa. Celiac disease usually refers to celiac gastritis, which is related to factors such as H. pylori infection, autoimmunity, medication, alcohol, etc., and has nothing to do with halitosis, which can lead to bad breath because H. pylori can decompose urea to produce ammonia and carbon dioxide. If patients with erosive gastritis do not have H. pylori infection, but suffer from dental caries and other diseases, it can also lead to the symptoms of bad breath. In addition to the above factors, other causes can also lead to bad breath, and it is recommended to consult a doctor in time to identify the cause and have the doctor take care of it.