Bad breath and restless sleep in two year old babies may be related to diseases such as periodontitis, pulpitis and indigestion. The exact situation varies from person to person and needs to be diagnosed after visiting a doctor. Periodontitis is a chronic inflammatory disease that invades the gums and periodontal tissues. This disease is most often caused by factors such as food impaction and trauma. Periodontal overflow of pus can lead to bad breath, and periodontal abscesses can lead to severe pain and decreased quality of sleep at night. Pulpitis is an inflammatory disease in which the pulp tissue is filled with blood vessels as the main pathological change. Typical symptoms are increased pain at night and poor sleep. Pediatric patients may also suffer from occlusal pain, recurrent swelling and pus in the gums, and pus leaking into the mouth can lead to the development of bad breath. Typical symptoms of dyspepsia are postprandial fullness, epigastric discomfort or burning sensation, which can lead to poor sleep at night, and due to the presence of acid reflux and vomiting and other gastrointestinal symptoms can lead to bad taste in the mouth. Two year old baby bad breath sleep unsettled, should be timely medical treatment, do not delay, so as not to delay the condition. Pay attention to rest on weekdays and avoid overwork.