It is not normal to have unformed stools at the back of the bowel, which may be caused by indigestion, irritable bowel syndrome or intestinal dysfunction. 1. Indigestion: If the stool is normal in the front but unformed in the back, the first thing to consider is that it is caused by indigestion. When indigestion occurs, the stools are normal in the front and loose and unformed in the back. Most of the patients also have acid reflux, belching (hiccups), abdominal distension and other symptoms, this situation can take drugs to help digestion, such as pancreatic enzyme enteric-coated tablets, mosapride and so on to regulate. 2. Irritable Bowel Syndrome (IBS): If the patient’s stools are sometimes normal and sometimes abnormal, or normal in front and abnormal behind, it may be caused by IBS. In this case, you can take probiotics to regulate, and pay attention to diet and life regulation. 3. Intestinal dysfunction: The patient’s stool is not formed at the back part, and there are also symptoms such as postprandial fullness, heartburn, epigastric pain, etc., which may be caused by intestinal dysfunction. Occasionally, the unformed back part of the stool may also be related to poor diet, or cold abdomen, etc. It can be relieved by itself after conditioning and rest, and does not need special treatment. If the symptoms persist or are accompanied by other discomforts, consult a doctor in a timely manner to clarify the cause of the problem and follow the doctor’s instructions.