Physiologic and pathologic causes should be considered for a good appetite but no bowel movement. Physiological causes include eating less vegetables and fruits, drinking less water, etc. Pathological causes include taking anticholinergics, hypothyroidism, intestinal obstruction, congenital megacolon, etc. 1. Physiological reasons: such as eating less vegetables and fruits, drinking less water, etc. can lead to dry stools that are not easily discharged, resulting in constipation. 2. Pathological causes: such as taking belladonna tablets, scopolamine, atropine and other anticholinergic drugs, can relax the intestinal smooth muscle, leading to defecation difficulties; such as hypothyroidism will be accompanied by gastrointestinal peristalsis slowdown; such as intestinal obstruction can lead to intestinal opacity, the emergence of stopping defecation, defecation of the symptoms. For example, congenital megacolon can lead to continuous spasm of the intestinal tube and stagnation of feces in the intestinal tract. Appetite is good but not defecation, there are many reasons, it is recommended to improve the examination, to clarify the cause of the disease, and active treatment.