No tongue coating on the tongue of patients with cerebral infarction may be related to the decline of spleen and gastric function, and may also be caused by atrophic lingual inflammation and dry syndrome. 1. Decrease in oral cleaning function: patients with cerebral infarction may have the sequelae of dysphagia, coupled with prolonged bed rest, which may lead to a decrease in oral cleaning function, resulting in a large area of shedding of tongue coating, which may lead to the phenomenon of having no tongue coating on the tongue, and may be accompanied by halitosis and other symptoms. 2. Atrophic lingual inflammation: if patients with cerebral infarction have swallowing disorder, they may need long-term nasal feeding, which may cause iron deficiency anemia over a long period of time and thus may induce atrophic lingual inflammation, which may show no tongue coating on the tongue. 3. Dry syndrome: the disease is usually caused by autoimmune factors, viral infections and other reasons. Patients with cerebral infarction have relatively poor autoimmunity and are likely to develop dry syndrome. The disease will violate the salivary glands of the patients, which may show that there is no tongue coating on the tongue, and may be accompanied by dry mouth, dry eyes and other symptoms. The absence of tongue coating on the tongue of patients with cerebral infarction may also be caused by other reasons. If accompanied by other uncomfortable symptoms, you should consult a doctor as soon as possible, and after a clear diagnosis of the causative factors, give targeted treatment and conditioning.