The main causes of unformed stools include the following: 1, dietary factors caused by the intake of too much spicy or raw cold and other stimulating food, easily caused by intestinal discomfort, or eat food unclean food poisoning and other reasons, will cause the phenomenon of diarrhea. 2, the intestines and stomach cold and other reasons caused by diarrhea phenomenon, due to changes in temperature and the external environment, or their own insulation The symptoms of diarrhea caused by the presence of gastrointestinal diseases, including some acute gastroenteritis, as well as gastric ulcer, duodenal ulcer and other gastrointestinal lesions, can easily cause the symptoms of diarrhea. In addition, some malignant tumors can also easily cause the symptoms of thin and unformed stools, need to be especially vigilant.