Gastrointestinal polyp resection, three months after the abdominal pain, may be gastrointestinal polyp recurrence, gastroenteritis or gastrointestinal tract dysfunction and other reasons, need to be analyzed specifically. 1. recurrence of gastrointestinal polyps: such as gastrointestinal polyps may have incomplete resection during the operation, or other factors lead to recurrence of gastrointestinal polyps, occupying a certain amount of gastrointestinal space after the cause of intestinal obstruction and other hidden pain. 2. Gastroenteritis: three months after the removal of gastrointestinal polyps abdominal pain, may be due to postoperative immunity reduction, resulting in gastrointestinal bacterial infection. Patients may be accompanied by diarrhea and other abnormal symptoms, which is caused by bacterial invasion of the intestinal wall. 3. Gastrointestinal dysfunction: patients may have recently been exposed to cold or unreasonable diet after the operation, resulting in increased gastrointestinal peristalsis to stimulate the corresponding nerves, resulting in abdominal pain and other abnormal symptoms. Gastrointestinal polyps three months after the removal of abdominal pain may also be caused by other reasons, it is recommended that the patient to consult a doctor in a timely manner, after a clear diagnosis and treatment as prescribed by the doctor.