The reasons for eating less and pooping more include gastrointestinal tract dysfunction and gastroenteritis. 1. Gastrointestinal dysfunction: due to the patient’s gastrointestinal dysfunction, the gastrointestinal tract’s ability to digest and absorb food decreases, resulting in food can not be completely digested and absorbed by the gastrointestinal tract, along with the fecal matter out of the body, which manifests itself in the patient’s eating less, but pulling a lot of the situation appears. 2. Gastroenteritis: due to inflammatory infections in the gastrointestinal tract, when the inflammatory factor constantly stimulates the mucosa of the gastrointestinal tract, it will trigger the patient’s gastrointestinal tract to function abnormally, which will cause the patient to eat less and pull more. If the patient appears to eat less and poop more, it is recommended that the patient go to the hospital in time. Improve the relevant examination, clarify the cause of the disease, and follow the doctor’s instructions to use medication, so as not to delay the condition, resulting in adverse consequences.