Abdominal cramps during defecation may be caused by intestinal spasm, colitis, intestinal obstruction and so on. 1. Intestinal spasm: the cause of the disease is not clear, mostly considered to be related to gastrointestinal gas, diet, gastrointestinal hormones and other factors, while local cold, upper respiratory tract infection, overeating and drinking can also induce intestinal spasm. Patients often have paroxysmal acute abdominal pain, each attack can last for 3~5 minutes, some patients may also have abdominal cramps during defecation, accompanied by cold sweat, pallor and other phenomena. 2. Colitis: usually due to genetic, immune, microbial infection, local intestinal blood supply is insufficient, and with improper diet, mental stimulation, excessive fatigue and other factors. Patients often have mild to moderate abdominal pain. If ischemic colitis can also be manifested as sudden colic in the left lower abdomen, accompanied by urgency to defecate, thus manifesting as abdominal cramps during defecation. 3. Intestinal obstruction: it is usually caused by intestinal adhesion after abdominal surgery, colorectal tumor, and intra-abdominal abscess, intestinal torsion, intestinal inflammatory diseases, intestinal foreign body can also induce intestinal obstruction. Patients often have abdominal pain, and mechanical intestinal obstruction is mostly paroxysmal colic, and may be accompanied by abdominal distension, vomiting and other symptoms, may also occur when defecation abdominal cramps. It is recommended that patients with symptoms of abdominal cramps during defecation should consult a doctor in time for relevant examinations, to clarify the cause of the disease under the guidance of a professional physician, and actively treat the disease.