Causes of poor eating and lack of bowel movement include poor diet, constipation, and gastrointestinal insufficiency. Intervention can be made by improving the dietary structure, medication and other methods. 1. Improper diet: If the patient eats less and prefers spicy and dry food, it is easy to have no bowel movement. It is recommended to increase the variety of diet, such as banana, tofu, celery, etc., or reduce the consumption of food with heavy spices to avoid dry stools. 2. Constipation: Constipation patients are prone to the symptoms of no bowel movement, accompanied by decreased appetite and diet. Lactulose can be taken as prescribed by the doctor, or Keflex can be used to lubricate the intestinal tract to promote the discharge of stools. 3. Insufficient gastrointestinal motility: Insufficient gastrointestinal motility can lead to reduced eating and no bowel movement. You can take drugs to promote gastrointestinal peristalsis, such as mosapride citrate tablets, domperidone and other drugs to promote gastrointestinal peristalsis, along with gastrointestinal tablets and other digestive drugs. The above medications should be used under the guidance of a medical professional. There are more reasons for eating less and not having bowel movements, so it is recommended that patients go to the hospital to clarify the specific cause of the disease, and under the guidance of a professional physician to carry out targeted treatment.