White foam in the stool is considered to be caused by the mucus in the gastrointestinal tract following the discharge of feces, and is commonly seen in dyspepsia, chronic enteritis, irritable bowel syndrome, and so on. 1. Dyspepsia: this symptom is mainly due to the patient usually do not pay attention to the reasonable diet, often consume difficult to digest food, more gas-producing food, or the existence of gastrointestinal dysfunction and other conditions. Dyspepsia patients often appear after meals, food stays in the stomach for a long time, and the accumulation of food in the stomach for a long time will be gradually fermented, and some patients will have white foamy stools. 2. Chronic enteritis: this disease is usually due to the patient has suffered from acute enteritis, but the condition is not cured for a long time, recurrent episodes, mainly with bacteria, viruses and other infections, as well as improper diet and other factors. Patients often appear abdominal pain, diarrhea, abdominal distension and other symptoms, defecation can appear mucus stool or watery stool, thus showing white foam stool. 3. Irritable bowel syndrome: the specific cause of this disease is still unclear, clinical considerations and patients with high visceral sensitivity, abnormal gastrointestinal dynamics and other factors. When patients with this disease have diarrhea symptoms, the feces discharged are mainly pasty and contain a lot of mucus, which is manifested as white foam in the stool. It is recommended that patients who have recently experienced white foamy stools consult a doctor in a timely manner to clarify the specific cause of the disease and then actively treat it.