Diarrhea with foamy stools may be related to food factors, intestinal flora imbalance and acute enteritis. 1. Food factors: consuming too much food that is easy to ferment, such as potatoes, turnips, sweet potatoes, etc. These foods are fermented by the bacteria in the intestines and produce gas, resulting in excessive gas in the intestines, coupled with intestinal peristalsis, which may lead to foamy loose stools. 2. Intestinal flora imbalance: this disease is mainly manifested by diarrhea, if the patient is infected with pathogens such as Clostridium perfringens, foam will appear in the feces. 3. Acute enteritis: it often occurs in summer and fall, mostly caused by unclean diet, with typical symptoms of diarrhea, abdominal pain, nausea, vomiting, etc., which can also be manifested by the presence of foam in the feces. There are many other reasons for diarrhea and foam in the stool, if the symptoms are serious, or continue to see no improvement, it is recommended to go to the regular hospital in a timely manner, to clarify the cause of the disease, and then targeted treatment under the guidance of the doctor.