Eating and then pooping may be related to irritable bowel syndrome, chronic enteritis, hyperthyroidism and other conditions, which need to be clearly diagnosed. 1. Irritable bowel syndrome (IBS): mainly manifested by long-term constipation, diarrhea and abdominal pain, and the amount of feces in each bowel movement is relatively small, which may be manifested as intermittent or persistent diarrhea. 2. Chronic enteritis: it may be related to eating unclean food, leading to fungal or bacterial infection, or it may be related to acute enteritis without treatment for a long time. The main manifestation is diarrhea after eating, accompanied by abdominal pain and pus and blood stools and other phenomena. 3. Hyperthyroidism: patients with hyperthyroidism may show an increase in the number of bowel movements, or they may want to have diarrhea after a bowel movement. And the patient will have a significant weight loss, appetite and other phenomena. It is recommended that the patient consult a doctor in a timely manner to clarify the cause of the disease, and strictly comply with the doctor’s instructions for treatment.