The white salty foam from the split tongue may be caused by gastric ulcer, colitis and tongue infection. 1. Gastric ulcer: Gastric ulcer refers to a chronic ulcerative disease located between the cardia and the pylorus, which is usually caused by the patient’s eating habits and bacterial infections, and the patient may suffer from bleeding, perforation, lack of appetite and other symptoms. 2. Colitis: Colitis refers to inflammatory lesions of the colon caused by various reasons, usually due to problems with the patient’s own immune system, and the patient may experience symptoms such as abdominal distension, weight loss, and fatigue. 3. Tongue inflammation: Tongue inflammation is a chronic, non-specific inflammation of the tongue, which may be caused by lack of nutrition and lack of attention to oral hygiene, etc. Patients may experience numbness, burning, pain and other symptoms. Patients should go to the hospital to identify the cause of the disease and treat it under the guidance of the doctor.