There are many reasons why the stool is not shaped after endoscopic resection of rectal endocrine tumor, which may be caused by postoperative reaction, improper diet, gastrointestinal tract stimulation and so on. 1. Postoperative reaction: endoscopic resection of rectal endocrine tumors will cause certain stimulation to the gastrointestinal tract of patients, which will easily lead to changes in the frequency of gastrointestinal peristalsis, which can make some patients have symptoms such as unshaped stools after the surgery, and generally with the recovery of the surgery, the relevant symptoms of the patients will be slowly relieved. 2. Improper diet: after endoscopic resection of rectal endocrine tumor, such as patients eat unclean food or eat cold food, eat irregularly, etc., which may lead to unshaped stool. 3. Stimulation of gastrointestinal tract: sudden change of climate, mental stress, seasonal changes, environmental temperature changes, etc. can easily lead to intestinal peristalsis disorders, which will make the patient’s stools not shaped. After endoscopic resection of rectal endocrine tumor, patients need to pay attention to dietary modification, at the same time, pay attention to regular review, such as a short period of time adverse symptoms do not improve, need to consult a doctor in a timely manner, in accordance with the doctor’s instructions.