Physiologic and pathologic causes of irregular bowel movements need to be considered. Physiological causes include eating cold and spicy food, irritating food, etc. Pathological causes include enteritis, irritable bowel syndrome, intestinal masses, etc. 1. Physiological causes: such as eating cold food, eating stimulating food, etc. can lead to increased intestinal peristalsis, decreased digestion and absorption ability, resulting in unshaped stools. 2. Pathological causes: such as enteritis and other diseases can be accompanied by abdominal pain, fever and other symptoms, such as irritable bowel syndrome can also have abdominal distension, bowel sounds and other symptoms, such as intestinal masses can also have blood in the stool, wasting and other symptoms. For the causes of irregular bowel movements, it is recommended to consult a doctor for clarification in conjunction with the necessary stool routine, colonoscopy and other tests.